I love how everyone else spots fake francium explosion videos by saying "you couldn't synthesize enough francium in a short enough time to have a lump of it to throw in the water" but the professor spots the fakeness by saying "actually, it's less reactive than caesium, so that big explosion isn't caused by francium. however, let's study the chemistry of that explosion"
This just means that probabilistic orbitals can happen if the Electron moves at or slower than light speed, but relativistic orbitals would require the electron to move /faster/ than light speed.
Physicists get criticized for teaching the history of physics rather than the current accepted model. At the same time, students always ask, "Why/how do we know that?" or "Why is this (physics) needed?" It's refreshing to hear someone who's interested in the history of science, as it truly informs where we are to know the history of stumbles and successes along the way, and that we are not at the end of the story.
Im studying chemistry and i cant confirm that we learn a lot about history. Sure, our professors throw in an anecdote here and there, but we are tought hardly anything about the history. (At least thats the case here in germany)
I think in any science (or even any sort of study in any field) it's important to understand the history so we know why and how the predecessors of a particular field thought. Anything from chemistry or animation and film. Even history, it's important to know how history has been recorded throughout the ages.
Watching the proffesor in the first seconds as he begins to tell a long long way too long story about science is endlessly amazing, and once and there we get to see the other members mostly neil he is so cool, and the other funny guy
Many elements in the periodic table were named after their discoverers' respective geographic nationalities, either by continent (europium, americium), country (gallium, germanium, ruthenium) or city (hafnium, holmium, lutetium). And in most cases, they happen to be sovereign entities. Marguerite Perey's mentor Marie Curie named one of her discovered elements _polonium_ in 1898 after her native country Poland, which at the time had been wiped off the map for over a century by neighboring empires. Luckily, Marie lived to see Poland come back after the First World War. Perey, on the other hand, had to live through a second World War which not only subdued Poland again but also overtook her native France. It seems thus fitting that in 1946, a year after France was liberated, she would name this new (albeit ephemeral) element _francium._
As a fellow Dr. & researcher I love watching Prof. Sir Poliakoff's enthusiasm even after doing research for 45-55 years. It just goes to show why us scientists do the work we do : Passion. We may not get paid the wage of a modern day roofer or electrician but we do it because we love doing it.!!!!!!!!!!!
There's something wonderful about a person trained to study data and numbers and facts who chooses to tell a story about a person. Science is not the only way to study our universe.
For a fairly short time the element was named Alabamine by analogy with iodine, bromine, chlorine etc. It appears as such in an old encyclopaedia I had as a child (early 1950's). Presumably the name was dropped when the research was found to be faulty and it's now called Astatine. I wonder what francium astatide is like. Like caesium iodide only more so.
I agree. My high school chemistry teacher projected all the enthusiasm of a snail on a cold day. I would later develop an interest as, who can resist “the study of matter and its (sometimes rather thrilling and fulminating) transformations”? 😄😄☠️🔥💥
You would still have to do all the boring mandatory highschool chemistry stuff. Like balancing equations, significant figures, heat system equations, etc...
Your both just more intrested now, I gurentee your teacher was passionate about science. Working in a school grinds you down and it’s just a job, but to the kids who share the passion when they are at school see a lot more of there teachers passion when they ask questions farther than just turning off, after years of the latter teachers turn of to, lest they end up hating there job lol
Agree. My chemistry memories from high school extend to setting magnesium on fire. After that I have nothing. Sad really. It should have been exciting given the potential.
I love these videos. I'm learning Chemistry from the very beginning right now. The stories surrounding the elements and expirements shown really help keeping my mind focused in this realm. Thank you!
Honestly I never knew that’s what people meant by ‘relativistic effects’ when talking about atoms. Thanks this is genuinely amazing. The story of it is incredible as well.
I've studied a lot of relativity as a physics student, but the fact that relativity affects the reactivity of Francium is seriously mind blowing. I can't believe I never knew about that!! These videos are gems.
I did the math on it once. A gram of Francium-223 puts out about 260,000 watts from its radioactive decay, so it would explode pretty violently even if you didn't put it in water.
Interesting about the phenomena of the valence electrons on Francium holding tighter than on Cesium, I would never have thought about the speed of light being a factor.
OMG, what calibre of research assistants were back then! Could you get an assistant to perform these sorts of experiments to day? I doubt it. Certainly none of the labs I'e worked in had such assistants LOL- especially ones without a degree.
Nathan Jessep It would destroy the chemical name pattern, plus, What symbols would these cat-related elements have? How would scientists name other elements? When will it stop?
I really like the alkali metals, probably my favorite group on the periodic table. So ive always wondered, does cesium alloy with the other alkali metals in the same way sodium does with potassium? Also could you alloy all of the avalable alkali metals together. I ask because i know that potasium sodium alloy is more reactive than either of the metals alone. This is my favorite channel on youtube and i would love to see a video with some experiments playing with the possibilities of the alkali alloys.
And also the mass of the alkali metal needs to be inculuded. A gram of francium would have way less atoms than the other alkali metals. So the reaction of the same mass will produce a way less big explosion.
Correction: The electrons of francium aren't heavier, but have more more momentum because they are moving close to the speed of light, and their apparent weight is larger.
Critical fumble not calling it catium. A great counsel must be convened in order to rectify this situation. Also, they should call it the aCATemy of science instead of academy.
Professor, you're forgetting Francium's remarkable radioactivity.If I had an ampule of the stuff the sheer energy it gave out would make the stuff low.I think THAT would make its reaction with water considerably more impressive. Heck it'd make even a sample in a sealed vial interesting and exceptionally dangerous.
Sir, you are an amazing treasure to all people! I am an American and have never been abroad and the only reason I would do so would be the possibility of meeting you! All the best to you and your family!
What is the melting point of francium? That has a large bearing on the violence of the reaction with water. For example, lithium reacts slowly with water, because its melting point is 165C, so the water cools it, and it remains a solid. Sodium/potassium/rubidium/cesium all have melting points well below 100C so they liquefy and disperse in water, speeding the reaction.
If you had a significant quantity of francium, I imagine the energy from its radioactivity would cause a bigger explosion than a chemical reaction with water. For francium-223, I calculate 111GJ/mol, though that wouldn't all be released at once. I calculate the rate of heat production from its radioactive decay would be about 60MW/mol.
If you put an element called catium on the periodic table, it would only be a matter of time before it pushed all the other elements off. It might form some interesting meowlecules, though.
Even if Francium did have a lower ionization energy, the very small amount of energy and hydrogen released, per unit volume of the element, would mean that it doesn't react with that much excitement. We see this with cesium vs potassium. Cesium may be more reactive than potassium, but actually creates a more exciting reason and releases more gas.
Thanks from Russia! Your videos are very amazing! I did not find another chemical videos with history of chemistry in Russia TH-cam. It is very important information for students who love chemistry. Thank you again!!!
Perhaps Perey's greatest discovery was to find out that Actinium is actually mild Alpha transmitter. Back then, it was widely regarded as Beta transmitter and that was correct - 99% of the decay of Ac is accompanied by Beta transmission, but 1% is Alpha. Without Alpha transmission it is not possible for Ac to decay into Fr.
After watching this video I finally understood what a cat is. I was really confused by the meaning of the world and I couldn't even identify the animal the name belongs to. Now I finally feel enlightened. J/K this videos are awesome, I just found that clarification really amusing and funny ;).
If you know it's momentum, then you won't know it's position. If you know it's position, then you won't know it's momentum. Have a mix of the two and you get a probability of positions where the electron might be.
Hassan Tahan not totally right. Let me point it out more precisely. There is the heisenberg's uncertainty principle which states that the better you know the speed of the electron, the less you can know its position. And the better you know its position, the less you can know its speed. That's because we can detect an electron position by radiating an atom and when the radiation gets back to you, you'll have found the electron (that's how SAM and ATM microscopies work, but i explained it very poorly cuz the details are long and complicated). Since the electron is incredibly small, we'll need a very short-lenght wave to hit it (like gamma rays, or even shorter). This means that the wave will have a great energy, and when it hits the electron it'll increase greatly its speed. So you can't know perfectly both speed and position of the electron. Fun fact: Einstein never accepted this. He never believed in an uncomplete knowledge of the electron.
Pietro Tettamanti it is not because how we detect it, it is because it is a fundamental part of the electron. They are fundamentally not in a place of certainty. We can, no matter what, know fully where the electron goes, or where it is. Btw, what was wrong with what I said? It isn't the most precise, but that is because I'm not gonna write an essay in the TH-cam comments section.
as far as I know the electron is not a little ball circling around the nucleus but a probability wave a diffuse fog of energy so I am not sure I follow what it means that the electron is moving faster in Fr...
I wondered whether the makers of the fake Francium videos did do with the hope of seeing Professor P tearing his hair out! It would be quite a spectacle! Thank you guys so much for a wonderful series of videos.
I appreciate the content of this video and the work of the people who made the mentioned discoveries. I'd only wish that ppl say the full name: Marie Curie-Sklodowska. She had Polish roots and I think it's only OK to say her double surname fully. :) Keep on the good work with Periodic Table of Videos.
So, I understand that the francium atom is not as big as you would expect. But if its still bigger than caesium, why is caesium slightly more reactive?
Please stop faking Francium explosions, we dont want professor to lose his amazing hair.
Professor Poliakoff would not be as endearing as he is, if he were to lose his hair. However, let's imagine him with dreadlocks.
Why would he do that, lol.
The videos looked like the test footage for test they did with nuclear explosives. At least the first one idk about the other ones
If you were to somehow drop a block of Francium into a large body of water, the EPA would soon pay you a visit.
Knight Wing There are other countries in addition to the USA.
Don't tear your magnificent hair out Prof please.
Came down here to say that :-)
Me too!
It’s alright, it’ll grow back in days.
Baha Ibrahim years*
His hair is SOOOOO CREEPY
7:39 "Cats, the furry animal"
Thanks for that clarification professor. I was struggling to remember what a cat was ;)
Not to be confused with the mobile and heavy machine manufacturer CAT. :)
That sounds serious. You may need to have a Cat scan!
Scientific rigour
CATIUM
biology
I love how everyone else spots fake francium explosion videos by saying "you couldn't synthesize enough francium in a short enough time to have a lump of it to throw in the water" but the professor spots the fakeness by saying "actually, it's less reactive than caesium, so that big explosion isn't caused by francium. however, let's study the chemistry of that explosion"
That part about the relativistic effects on the electrons is the most mind-bending part of the whole video!
How so?
thought the same
This just means that probabilistic orbitals can happen if the Electron moves at or slower than light speed, but relativistic orbitals would require the electron to move /faster/ than light speed.
I love how a big part of Chemistry studies is to learn about Chemistry history.
Physicists get criticized for teaching the history of physics rather than the current accepted model. At the same time, students always ask, "Why/how do we know that?" or "Why is this (physics) needed?"
It's refreshing to hear someone who's interested in the history of science, as it truly informs where we are to know the history of stumbles and successes along the way, and that we are not at the end of the story.
Im studying chemistry and i cant confirm that we learn a lot about history. Sure, our professors throw in an anecdote here and there, but we are tought hardly anything about the history. (At least thats the case here in germany)
You look like Michael from Vsauce.
I think in any science (or even any sort of study in any field) it's important to understand the history so we know why and how the predecessors of a particular field thought. Anything from chemistry or animation and film. Even history, it's important to know how history has been recorded throughout the ages.
Yeah yeah like the development of the atomic theory is very interesting
Oh boy! I love periodic videos. Its more than 3 years now. These guys have encouraged me a lot.
Watching the proffesor in the first seconds as he begins to tell a long long way too long story about science is endlessly amazing, and once and there we get to see the other members mostly neil he is so cool, and the other funny guy
I’ve been here since 2008
I do enjoy Sam's videos. She makes it interesting
Many elements in the periodic table were named after their discoverers' respective geographic nationalities, either by continent (europium, americium), country (gallium, germanium, ruthenium) or city (hafnium, holmium, lutetium). And in most cases, they happen to be sovereign entities. Marguerite Perey's mentor Marie Curie named one of her discovered elements _polonium_ in 1898 after her native country Poland, which at the time had been wiped off the map for over a century by neighboring empires. Luckily, Marie lived to see Poland come back after the First World War. Perey, on the other hand, had to live through a second World War which not only subdued Poland again but also overtook her native France. It seems thus fitting that in 1946, a year after France was liberated, she would name this new (albeit ephemeral) element _francium._
City superheavy element: Livermorium
and sometimes after universities and cities at the same time (berkelium)
As a fellow Dr. & researcher I love watching Prof. Sir Poliakoff's enthusiasm even after doing research for 45-55 years. It just goes to show why us scientists do the work we do : Passion.
We may not get paid the wage of a modern day roofer or electrician but we do it because we love doing it.!!!!!!!!!!!
There's something wonderful about a person trained to study data and numbers and facts who chooses to tell a story about a person. Science is not the only way to study our universe.
It's always a pleasure to listen to prof.poliokoff. He's truely an amazing scientist 😊🔬👌👌🎊
yes
Are you telling me we missed out on the name Alabamium?
For a fairly short time the element was named Alabamine by analogy with iodine, bromine, chlorine etc. It appears as such in an old encyclopaedia I had as a child (early 1950's). Presumably the name was dropped when the research was found to be faulty and it's now called Astatine. I wonder what francium astatide is like. Like caesium iodide only more so.
The only thing a hayseed from Alabama ever discovered was that sleeping with sheep was possible.
@@Statickification lol
Well, as it is, it is indirectly named after an upwardly mobile barbarian tribe.
Isn't that what you get when a proton and an electron both decayed from the same parent atom procreate?
Don't tear your hair!
Indeed, he would lose his science powers!
I'm gonna take some of his hair and sell it on Amazon.
Anything but the hair!
If i had a professor like him in high school i would have probably being more interested in chemistry . I love your videos, learning lots of stuff.
I agree. My high school chemistry teacher projected all the enthusiasm of a snail on a cold day. I would later develop an interest as, who can resist “the study of matter and its (sometimes rather thrilling and fulminating) transformations”? 😄😄☠️🔥💥
You would still have to do all the boring mandatory highschool chemistry stuff. Like balancing equations, significant figures, heat system equations, etc...
Professor Walter White anyone...?
Your both just more intrested now, I gurentee your teacher was passionate about science. Working in a school grinds you down and it’s just a job, but to the kids who share the passion when they are at school see a lot more of there teachers passion when they ask questions farther than just turning off, after years of the latter teachers turn of to, lest they end up hating there job lol
Agree. My chemistry memories from high school extend to setting magnesium on fire. After that I have nothing. Sad really. It should have been exciting given the potential.
I love these videos. I'm learning Chemistry from the very beginning right now. The stories surrounding the elements and expirements shown really help keeping my mind focused in this realm. Thank you!
Honestly I never knew that’s what people meant by ‘relativistic effects’ when talking about atoms. Thanks this is genuinely amazing. The story of it is incredible as well.
I've studied a lot of relativity as a physics student, but the fact that relativity affects the reactivity of Francium is seriously mind blowing. I can't believe I never knew about that!! These videos are gems.
I did the math on it once. A gram of Francium-223 puts out about 260,000 watts from its radioactive decay, so it would explode pretty violently even if you didn't put it in water.
I prefer Catium, I’m pretty sure Schrödinger will back me up on that.
Green Silver or not, maybe...
The first element which is decayed and not decayed at the same time :D
He may or may not, hard to say without checking
it's Catgen not catium
Thousands of cats would agree, I'm sure.
"except something psychological in his mind"
OHHHHHHHHHHH SHOTS FIRED! SHOTS FIRED!
And if you'd like to see what a Francium explosion looks like, just look at the prof's hair.
9ff70f96 lol totally correct
You can tell he is a chemist by that hair lol. That is the hair of many trial and error chemical reactions
This videos make me so happy. It's so cool to see how much there is to know about each and every element.
Yep! I remember 4 years ago I watched all those fake videos, glad you made another Francium video. Been here since 2008! Best TH-cam channel ever!!
Your french accent for the names is excellent professor! Keep it up! Amazing as always!
Obviously this element was named before cats were held in higher regard than France.
I.e - today
*francine
Another very interesting story! I really like, that the old videos are reuploaded :)
+Random Experiments International this isn't a "re-upload" as such, it's a new video "replacing" our older and shorter ones on Francium.
Interesting about the phenomena of the valence electrons on Francium holding tighter than on Cesium, I would never have thought about the speed of light being a factor.
OMG, what calibre of research assistants were back then! Could you get an assistant to perform these sorts of experiments to day? I doubt it. Certainly none of the labs I'e worked in had such assistants LOL- especially ones without a degree.
A new video at last!! Thanks, Brady and Prof. Martyn.
Pagol 1 bro 👊 👊👊👊👊👊👊👊👊
hi i am french and i love your videos and i think that your prononciation is pretty fun
So can we get an element named after him?
Nessuno Anon Martynium
Poliakogen
Well, it would be the 3rd exception - an element named after a still living person.
Profesorium
Poliakoffium/Poliakoffine!!!
your hair is just getting more epic
"Catium" choice for the element's name could made it meme af in 2007
Sir, I could listen to you for hours.
Much respect from Galveston, Texas
And it's my Birthday! What a great present!!! Thanks very much : )
andycapo123 Happy Birthday!
1-15-15-39 5-77-90-105-39!
Thank you so much for this video! Its wonderful to hear the professor teaching us. Best regards from Portugal 😊
The history behind all of the synthetically prepared elements is absolutely fascinating!
How is naming an element after CATS a bad thing?!?!
Nathan Jessep it was before TH-cam! Now we could have kittium, purrium, lapium. .. but I'd stop short of lickyourownarsium.
It would have been a purrfect name
Nathan Jessep it is.
Nathan Jessep It would destroy the chemical name pattern, plus, What symbols would these cat-related elements have? How would scientists name other elements? When will it stop?
Does this have anything to do with your profile picture?
These videos are supremely brilliant! If your not doing chemistry/science you'll want to do it now!
Don't tear out your hair. That hair is amazing.
Others possible names for Francium could be Pussium or Kittyum or Meowioum
Professor...please don't tear out your magnificent, beautiful, prodigious fluff of hair.
I really like the alkali metals, probably my favorite group on the periodic table. So ive always wondered, does cesium alloy with the other alkali metals in the same way sodium does with potassium? Also could you alloy all of the avalable alkali metals together.
I ask because i know that potasium sodium alloy is more reactive than either of the metals alone. This is my favorite channel on youtube and i would love to see a video with some experiments playing with the possibilities of the alkali alloys.
And also the mass of the alkali metal needs to be inculuded. A gram of francium would have way less atoms than the other alkali metals. So the reaction of the same mass will produce a way less big explosion.
This channel has probably taught more chemistry to more people than the combined public education systems of the western world.
probably
Not for me
If you think that you're just a bad student
No, the only reason these videos are popular is because of the western education systems.
This isn’t knowledge you can use in chemistry though. You need to learn the basics first.
Correction: The electrons of francium aren't heavier, but have more more momentum because they are moving close to the speed of light, and their apparent weight is larger.
Critical fumble not calling it catium. A great counsel must be convened in order to rectify this situation. Also, they should call it the aCATemy of science instead of academy.
Francium-the only element that runs BEFORE it’s poured.
Now I want a video of the professor explaining that process.
Professor, you're forgetting Francium's remarkable radioactivity.If I had an ampule of the stuff the sheer energy it gave out would make the stuff low.I think THAT would make its reaction with water considerably more impressive. Heck it'd make even a sample in a sealed vial interesting and exceptionally dangerous.
Sir, you are an amazing treasure to all people! I am an American and have never been abroad and the only reason I would do so would be the possibility of meeting you! All the best to you and your family!
I like how he gets straight to the point
It's great that in a chemistry video I'm learning about the speed of light and relativity.
5:06 Half-Life of 21 minutes
2+1=3
Half-Life 3 confirmed
Wow...
"Half" is 4 letters;
"Life" is also 4 letters;
One "-" (minus sign) - so 4-1 ..... 3!
I WISH ;_;
Since when does 4-1=6?
so when will this joke finally die
Amazing resource! My science paper is going to blow my teacher away. Thank you so much
"He was not measuring anything, except something psychological in his mind" Ouch professor :)
Kudos to the professor for the quality of his French pronunciation.
Happy to see you in good health, Professor :)
Why is there a flag of Lithuania on your shelf?
Perhaps it's the Prof's genetic heritage?
He visited
5:37 That's ridiculous to ignore someone's work just because they don't have the proper degree. Real-world skill should always trump paperwork.
Agreed. The amount of people I have met with a Masters Carpenter degree are astounding. And yet, they have zero experience.
agreed but that isn't how the world works as I'm sure you know
Only because people put up with it
Yet it nearly never does
Trump
Excellent video! Will you be making one for the new Nobel prize? I would love to hear the Prof. talk about it!
I'm very happy to see a new video
I've been waiting for this video do such a long time.
What a wonderful video. Thank you. I wish you had been my chemistry teacher.
What is the melting point of francium? That has a large bearing on the violence of the reaction with water. For example, lithium reacts slowly with water, because its melting point is 165C, so the water cools it, and it remains a solid. Sodium/potassium/rubidium/cesium all have melting points well below 100C so they liquefy and disperse in water, speeding the reaction.
If you had a significant quantity of francium, I imagine the energy from its radioactivity would cause a bigger explosion than a chemical reaction with water. For francium-223, I calculate 111GJ/mol, though that wouldn't all be released at once. I calculate the rate of heat production from its radioactive decay would be about 60MW/mol.
If you put an element called catium on the periodic table, it would only be a matter of time before it pushed all the other elements off. It might form some interesting meowlecules, though.
Even if Francium did have a lower ionization energy, the very small amount of energy and hydrogen released, per unit volume of the element, would mean that it doesn't react with that much excitement. We see this with cesium vs potassium. Cesium may be more reactive than potassium, but actually creates a more exciting reason and releases more gas.
Thanks from Russia! Your videos are very amazing! I did not find another chemical videos with history of chemistry in Russia TH-cam.
It is very important information for students who love chemistry. Thank you again!!!
Should do a video on the radium factories and the effects on the workers that were exposed to it
Finally a new periodic video!!! :D Please do more :D
Perhaps Perey's greatest discovery was to find out that Actinium is actually mild Alpha transmitter. Back then, it was widely regarded as Beta transmitter and that was correct - 99% of the decay of Ac is accompanied by Beta transmission, but 1% is Alpha. Without Alpha transmission it is not possible for Ac to decay into Fr.
This bookshelf must be full of literary treasures
I was listening to this doing my homework for Chemistry, and I heard him wanting to tear his hair out, I had to turn and look...
Catium?
Schrödinger : I say I like it like that !
Notification Squad: clicking that video faster than an alkali metal reacting with water.
After watching this video I finally understood what a cat is. I was really confused by the meaning of the world and I couldn't even identify the animal the name belongs to. Now I finally feel enlightened.
J/K this videos are awesome, I just found that clarification really amusing and funny ;).
One of my favorite Periodic Videos . Thank you.
YAY new Periodic Video!
I love all your videos! Thank you Professor
Hey I just noticed, why is there a Lithuanian flag on Poliakoff's bookshelf?
11:05 how is it even posible to determine the speed of an electron around a nucleus, when its location is governed by statistics?
ThomasHaberkorn I thought the same thing
If you know it's momentum, then you won't know it's position. If you know it's position, then you won't know it's momentum. Have a mix of the two and you get a probability of positions where the electron might be.
well, ok. Replace speed with momentum. got it
Hassan Tahan not totally right. Let me point it out more precisely. There is the heisenberg's uncertainty principle which states that the better you know the speed of the electron, the less you can know its position. And the better you know its position, the less you can know its speed. That's because we can detect an electron position by radiating an atom and when the radiation gets back to you, you'll have found the electron (that's how SAM and ATM microscopies work, but i explained it very poorly cuz the details are long and complicated). Since the electron is incredibly small, we'll need a very short-lenght wave to hit it (like gamma rays, or even shorter). This means that the wave will have a great energy, and when it hits the electron it'll increase greatly its speed. So you can't know perfectly both speed and position of the electron. Fun fact: Einstein never accepted this. He never believed in an uncomplete knowledge of the electron.
Pietro Tettamanti it is not because how we detect it, it is because it is a fundamental part of the electron. They are fundamentally not in a place of certainty. We can, no matter what, know fully where the electron goes, or where it is.
Btw, what was wrong with what I said? It isn't the most precise, but that is because I'm not gonna write an essay in the TH-cam comments section.
as far as I know the electron is not a little ball circling around the nucleus but a probability wave a diffuse fog of energy so I am not sure I follow what it means that the electron is moving faster in Fr...
"...something to do with cats - the furry animals" Thanks for clearing that up for us Prof!
How are 'relativistic effects' explained in QED?
I wondered whether the makers of the fake Francium videos did do with the hope of seeing Professor P tearing his hair out! It would be quite a spectacle! Thank you guys so much for a wonderful series of videos.
Boiling down tons of uranium ore? Do I have to be in the same room?
Doesn't franciums decay heat basically dwarf all possible chemical reactions in energy output?
Has your tie got the periodic table on it? Because if you do then that’s just brilliant.
With all due respect, Sir, I should inform your viewers that weight per weight Lithium is more reactive with water than any other alkaline metals.
1:31 - The professor throwin' a little shade, there? LOL
Best channel ever
I appreciate the content of this video and the work of the people who made the mentioned discoveries. I'd only wish that ppl say the full name: Marie Curie-Sklodowska. She had Polish roots and I think it's only OK to say her double surname fully. :) Keep on the good work with Periodic Table of Videos.
So, I understand that the francium atom is not as big as you would expect. But if its still bigger than caesium, why is caesium slightly more reactive?
LeoMRogers 10:53
Actually, a Fr+H2O video _would_ be the video of the century... the least of which is because there's so little of it around.
Fascinating, professor. With all respect, I LOVE YOU!!!
I will believe only Periodic Videos and some other trusted channels from now on.
so much enthusiasm than i ever had.
Thank you for this video. I loved every second of it
I love hearing about the historical background!! :D