another interesting detail that 1st years should never forget. although F is the most electronegative element, HF is a very weak acid, so although electronegativity increases down to up in the halogen group, acidic strenght increases up to down in this group the reason is that F is so electronegative, it never wants to let go of the H+ ion clinging to it, so that in a solution, HF molecules remain together and don't want to break apart into separate ions, while in HCl, the Cl atom is slightly less electronegative, so that Cl still wants to keep H close to it, but it rather prefers to let go of this ion in aqueous solution, so that in a HCl solution, you have Cl- ions and H+ protons that combine with H2O molecules to form H3O+ , H5O2+, H7O3+ , or even H9O4+ ions, it turns out that H3O+ ions are common in the gas phase, in liquid phase heavier ions exist.
@xiomilolo No, She is referring to the different bonds. If you are in general chemistry there is a chart that has the numbers associated with each symbol and you subtract the numbers if they are 0 it is a covalent bond, if it greater than or equal to 2 then it is an Ionic bond (meaning they transfer electrons), and the if it is great than 0 but less than 2 it is a Polar covalent bond. H2 will equal to 0 so it is a covalent bond. Another example is N2 3.0-3.0=0. Cs and CL 3.0-0.7=2.3
H at 2.1 and F at 4.0 is a difference of 1.9. It is close, but then there is the metal bonds nonmetal point for ionic bonds, and hydrogen is not a metal, and neither is fluorine.
I think you are right, I am confused too. Although the electronegativity you get 4-2.1 = 1.9, so it would be classified as ionic in that sense (greater than 1.5 difference). But this system is just used as a guide to help us determine types of bonds, it's not 100% accurate all the time. The reality is that HF exists under normal circumstances as a gas HF(g) just from experiment.
Because their electronegativities/ electron affinities are so vastly different, it's impossible for them to share electrons. This this more of a factor than them being classified as non-metals. That makes fluorine more of an electron taker (forms F-) and hydrogen a giver (forms H+). The ions attract each other and an ionic bond forms.
i barely noticed the errors. i didnt know anything about electronegativity and my teacher is terrible. i now have some pretty helpful notes to get my through this chapter. thnx!
nobody said they were giving different information...it's how it is given- much like listening to an avid storyteller or the clear eyes guy telling the same story- who'd you rather listen to and which person would captivate you? it's much easier to retain the same information when it's given in an entertaining way, instead of those teachers who just read of the powerpoint slides.....who'd you rather have teach you bruce lee or just one of his students? it's the same information, right?
As you move downwards the periodic table, atomic radius of an atom will increase because a new shell has been added, the electrons would have a higher tendency to lose electrons in a chemical reaction. especially in the outer shell because electrons are further away from the nucleus, therefore a weaker electrostatic force hence electro negativity decreases. As you move from LHS to RHS of the periodic table, electro negativity increases because atomic radius decreases and atoms approaching RHS
You explained that Cs or Caesium has the lowest electronegativity, which is false, it has an electronegativity of 0.79 while Francium or Fr has the lowest electronegativity of 0.7.. sorry to complain but it confused me, otherwise very great video, thanks!
Why are vdw then looking at all the electrons? As it says vdw increases as we increase the size as we have more electrons. But are we not comparing just the shared bond
@lROClKERS first off, the word is 'they're', not 'their'. Secondly, neither hydrogen nor flourine is a noble gas. Hydrogen is in group one, as much as it's in any group, and flourine is a halogen. Umm...duh.
Doesn't she know that Francium(Fr) has an EN of .7, and not Cesiun(Cs)?! Also, Florine(F) has an EN of 3.98 not 4, that could throw off all of science, especially Polarity.
that is subjective. And why say it like that? that's so offensive considering she's taking the time to explain this and wants to help people who don't know it. I personally think she's great You say that she sucks without reasoning and plus you state it as if it was a fact when it isn't because it's subjective. PLUS the majority of the people like this and her teachings have positive effects on those people who likes it and would prove your comment wrong.
I dunno about that - my teacher's from Lebanon, crazy accent and everything. She talks very quickly, and loudly, but she's still so hard to understand. . .
Is it just me who realize that HF is NOT an Ionic bonding but a POLAR COVALENT BOND?..... in the same way HCl would be an ionic bonding.. H+ and CL- do not need to share e-.. what make them an ionic bonding..
Sam Matta What was taught in my school is that ionic bonding require a metallic atom reacting with a non-metallic atom. This include NaCl. The Zig-zag line on periodic table marks the metal to Metalloid to non-metallic to noble gas. Although hydrogen is H+, it is a non-metallic element.
Please don't describe the negative charges of electrons as negative energy. That's the wrong term and will confuse people. Otherwise, very good explanation. Thanks
Pity she peppers her explanation with rising inflection as if she is asking a question every half sentence. Otherwise known as 'moronic interrogative'. So irritating.
Honestly, I didn't notice her peppering her sentences with interrogative inflections however the tone with which you communicated seemed to me to be unnecessarily harsh. That's all.
We'll make you feel positive about Electronegativity #science
No one I know has explained it so simple and concise as you! Thank you
another interesting detail that 1st years should never forget.
although F is the most electronegative element, HF is a very weak acid, so although electronegativity increases down to up in the halogen group, acidic strenght increases up to down in this group
the reason is that F is so electronegative, it never wants to let go of the H+ ion clinging to it, so that in a solution, HF molecules remain together and don't want to break apart into separate ions, while in HCl, the Cl atom is slightly less electronegative, so that Cl still wants to keep H close to it, but it rather prefers to let go of this ion in aqueous solution, so that in a HCl solution, you have Cl- ions and H+ protons that combine with H2O molecules to form H3O+ , H5O2+, H7O3+ , or even H9O4+ ions, it turns out that H3O+ ions are common in the gas phase, in liquid phase heavier ions exist.
Wow excellent job. This was concise and simple to understand. Thank you so much for using your gifts to help others!
@xiomilolo No, She is referring to the different bonds. If you are in general chemistry there is a chart that has the numbers associated with each symbol and you subtract the numbers if they are 0 it is a covalent bond, if it greater than or equal to 2 then it is an Ionic bond (meaning they transfer electrons), and the if it is great than 0 but less than 2 it is a Polar covalent bond. H2 will equal to 0 so it is a covalent bond. Another example is N2 3.0-3.0=0. Cs and CL 3.0-0.7=2.3
H at 2.1 and F at 4.0 is a difference of 1.9. It is close, but then there is the metal bonds nonmetal point for ionic bonds, and hydrogen is not a metal, and neither is fluorine.
omg thanks, you just saved me from failing my first chemistry exam. You explained this better in 4 minutes than in my 2 hour chemistry lecture.
@mmbicoshake I believe Francium is not included because it is radioactive. I know that Cesium is the least radioactive but forgot the reason.
I think you are right, I am confused too. Although the electronegativity you get 4-2.1 = 1.9, so it would be classified as ionic in that sense (greater than 1.5 difference). But this system is just used as a guide to help us determine types of bonds, it's not 100% accurate all the time. The reality is that HF exists under normal circumstances as a gas HF(g) just from experiment.
you're so great! This is really helping me for my test tomorrow
Excellent presentation! This is exactly what I wanted to hear. Thank you!!
Hydrogen doesnt want to form a proton it wants to form a cation 2:26
Electron Affinity is the amount of energy released OR ABSORBED when the electron attaches to a neutral atom.
I love you for making these.
loved this video, so much clearer for my test tmrw! ;D
Because their electronegativities/ electron affinities are so vastly different, it's impossible for them to share electrons. This this more of a factor than them being classified as non-metals. That makes fluorine more of an electron taker (forms F-) and hydrogen a giver (forms H+). The ions attract each other and an ionic bond forms.
metal and nonmetal make ionic bonds, nonmetal and nonmetal make covalent bonds
th-cam.com/video/1zCuTL81FVU/w-d-xo.html
awesome!! i just understood this topic 10xxxxx better
Great job. Great explanation.
i barely noticed the errors. i didnt know anything about electronegativity and my teacher is terrible. i now have some pretty helpful notes to get my through this chapter. thnx!
you just taught me more in four minutes than my teacher has taught me all year
right.
Your an idiot then
nobody said they were giving different information...it's how it is given- much like listening to an avid storyteller or the clear eyes guy telling the same story- who'd you rather listen to and which person would captivate you? it's much easier to retain the same information when it's given in an entertaining way, instead of those teachers who just read of the powerpoint slides.....who'd you rather have teach you bruce lee or just one of his students? it's the same information, right?
As you move downwards the periodic table, atomic radius of an atom will increase because a new shell has been added, the electrons would have a higher tendency to lose electrons in a chemical reaction. especially in the outer shell because electrons are further away from the nucleus, therefore a weaker electrostatic force hence electro negativity decreases.
As you move from LHS to RHS of the periodic table, electro negativity increases because atomic radius decreases and atoms approaching RHS
thank u for the help very easily explained
You explained that Cs or Caesium has the lowest electronegativity, which is false, it has an electronegativity of 0.79 while Francium or Fr has the lowest electronegativity of 0.7.. sorry to complain but it confused me, otherwise very great video, thanks!
Why are vdw then looking at all the electrons? As it says vdw increases as we increase the size as we have more electrons. But are we not comparing just the shared bond
wow you explained it really well :) I am now getting this :)
It's a amazing explanation....tq
lol.. that`s what I thought too .. but Francium has a slightly higher ionization energy than caesium - wiki
thanks...well explained
Excellent job thank you
I cracked up when she said, Cesium just want to be noble like the noble gases xD
@ffunky6666 i never knew what "bush chemistry" is, but you're right, hydrogen protons are definitely unstable!
well explained!
that's like saying every teacher is the same
@lROClKERS first off, the word is 'they're', not 'their'. Secondly, neither hydrogen nor flourine is a noble gas. Hydrogen is in group one, as much as it's in any group, and flourine is a halogen. Umm...duh.
isn't Francium the least electronegative element?
it is
LOVE YOU GUYS
Hydrogen doesn't form a proton. Hydrogen becomes a cation.
wait i though you only get ionic bonds between a nonmetal and a metal, how come ur get an ionic bond between hydrogen and fluorine?
i thought francium is the last one at the bottom to be the least electronegative atom??
Cs actually has an electronegativity of 0.79 while Fr has a rating of 0.7 making it the lowest
ok nerd
@Mieraz22 Yes it is,. She made a mistake :O
No one is perfect. Stop looking for imperfections and you will not find them.
why you said that hydrogen flouride forms an ionic bond, they don't form polar bond?
They do form a polar covalent bond.
Ionic bond is formed between a metal and a non metal.
its video help us to easily understand the chemistry
Really to good and helpful
Doesn't she know that Francium(Fr) has an EN of .7, and not Cesiun(Cs)?! Also, Florine(F) has an EN of 3.98 not 4, that could throw off all of science, especially Polarity.
Thank you so much
Excellent
I think Fr is having lowest Electronegativity
well, Fr and Cs have the same Electronegativity which is 0.7
Why is oxygen more electro negative than chlorine?
that is subjective. And why say it like that? that's so offensive considering she's taking the time to explain this and wants to help people who don't know it. I personally think she's great You say that she sucks without reasoning and plus you state it as if it was a fact when it isn't because it's subjective. PLUS the majority of the people like this and her teachings have positive effects on those people who likes it and would prove your comment wrong.
thanxx Dr
I dunno about that - my teacher's from Lebanon, crazy accent and everything. She talks very quickly, and loudly, but she's still so hard to understand. . .
THANK U
Thank you
the least electronegative is Fr not Cs, am i right???
i dont understand how hydrogen and fluorine form an ionic bond when they are non metals
dude hydrogen is positive and fluorine is negative so they react and form HF, duh
Ionic bonds form between a metal and a non metal
HYDROGEN WITHOUT AN ELECTRON IS A PROTON
That's what I was thinking...
My chemistry teacher doesn't teach. He messes around all class period and simply goofs off.
Ur my new best friend!!
"Hydrogen which we know likes to form a proton." Do you mean a cation?
10 years ago
who else is watching this after a decade???in corona
its probably her first video......she looks nervous...good job though!! you teach better than my own chemistry teacher:)
Is it just me who realize that HF is NOT an Ionic bonding but a POLAR COVALENT BOND?..... in the same way HCl would be an ionic bonding.. H+ and CL- do not need to share e-.. what make them an ionic bonding..
Sam Matta What was taught in my school is that ionic bonding require a metallic atom reacting with a non-metallic atom. This include NaCl. The Zig-zag line on periodic table marks the metal to Metalloid to non-metallic to noble gas. Although hydrogen is H+, it is a non-metallic element.
Thanks
@Pokelucelop Tomorrow? Lmao! Hope you did well :)
Please don't describe the negative charges of electrons as negative energy. That's the wrong term and will confuse people.
Otherwise, very good explanation. Thanks
thanks
thank u
Thanks.
Franceium has the lowest electronegitivity
Hcl is polar r covalent
I love this video, I wan't to have its babies.
1:41 "large and pretty soft" ;)
You obviously haven't met my teacher...
nice 240p
Pity she peppers her explanation with rising inflection as if she is asking a question every half sentence. Otherwise known as 'moronic interrogative'. So irritating.
trawetseeldot
:-)
Wow really. Pity you come off as negative and critical.
K777angel Is there anything incorrect in my observations?
Honestly, I didn't notice her peppering her sentences with interrogative inflections however the tone with which you communicated seemed to me to be unnecessarily harsh. That's all.
Harsh perhaps! But true.
:)
Wasted 4 minutes of my life..
thanks
thanks