Orbits start from K, because The electron orbit or energy level naming convention starts from K, not A, due to historical and scientific reasons. Historical reason: The naming convention originated from the early 20th-century spectroscopists, who used letters to label the spectral lines. They started with K (K-shell) for the innermost energy level, followed by L, M, N, and so on. Scientific reason: The K-shell corresponds to the principal quantum number n=1, which represents the lowest energy level or innermost orbit. The letters K, L, M, etc., are derived from the spectroscopic notation: - K (n=1): 1s orbital (spherical symmetry) - L (n=2): 2s and 2p orbitals (spherical and dumbbell-shaped) - M (n=3): 3s, 3p, and 3d orbitals - N (n=4): 4s, 4p, 4d, and 4f orbitals The letters A, B, C, etc., were already used for other purposes in spectroscopy, such as labeling spectral series or transitions. Modern notation: Today, the Aufbau principle and the periodic table guide the electron configuration notation. The energy levels are labeled with numbers (1, 2, 3, ...) and letters (s, p, d, f) indicating orbital shapes. However, the historical KLMN notation remains widely used, especially in X-ray spectroscopy and electron configuration shorthand.
The naming convention for electron shells in an atom originated from the spectroscopic notation used to classify atomic transitions. The first letter, "K," represents the sharp spectral lines in X-ray emissions. This convention extends to other shells as well, with subsequent letters like L, M, etc., denoting other spectral lines. •One more version says that the "K" shell is named after the German word "Kante" which means "edge" in English. It's the closest to the nucleus and was discovered first, hence the name "K."
Hello sir😊 The first shell of an atom is called the K shell because it's named after the K type X-ray, which is the highest energy X-ray an atom can emit Sir could you please try to upload video on Structure of atom based on Quantum mechanics 😢
I request sir can you upload video in how to find valency of any element in Hindi please don't ignore I also want to know these concepts 2,8,8,18,18,32,32 in my class room many people says 2,8,18,32 in correct but I was confused I hope you will solve it my this problem
2,8,8,18,18,32,32 is right. see in periodic table 1st row has 2 element, 2nd has 8 , 3rd has 8, 4th has 18 (potassium to krypton), 5th has 18 (rubidium to xenon) now, we have 2 row of 32, 1st as we go from Caesium Barium Lanthanum (1st of those two extra row at last from Cerium to Lutetium ) (the original 6th row from hafnium to radon) Yeah all of these from Caesium to Radon are 32 elements I know hard to understand but yeah it is what it is and 2nd row of 32 elements has elements from Francium to Actinium then whole Actinoid (bottom most series) series then Rutherfordium to Oganesson.
9:01 Why is the electron configuration of Ca isn't *Calcium - 2, 8, 10* ? It's mentioned earlier in the video, that the third orbit line is also 2n² (2 x 3²).
if u dont understand tell me The electron configuration of calcium is 2,8,8,2 and not 2,8,10 because of how electron shells and subshells are organized in terms of energy levels. Even though the third shell (n = 3) can theoretically hold up to 18 electrons, these electrons are placed into subshells (s, p, d, etc.) based on their energy. The subshells fill in a specific order, not purely based on the number of electrons a shell can hold. Here’s the order of filling for calcium: First shell (n=1): 2 electrons in the 1s subshell. Second shell (n=2): 8 electrons (2 in the 2s subshell and 6 in the 2p subshell). Third shell (n=3): The 3s and 3p subshells are filled with 8 electrons (2 in the 3s and 6 in the 3p). At this point, only the 3s and 3p subshells are filled. Even though the third shell can hold up to 18 electrons, the next electrons after the 3p go into the 4s subshell (which is lower in energy than the 3d subshell, even though it belongs to the fourth shell). Fourth shell (n=4): 2 electrons go into the 4s subshell. So, for calcium (atomic number 20), its configuration ends up being 2,8,8,2 because the two additional electrons beyond the first 18 fill the lower-energy 4s subshell, not the 3d subshell. Once elements with more electrons are involved (e.g., transition metals), the 3d subshell starts filling.
I am on my 40s now and i wasn't study anything back in my school days.. now i am start studying for my kid of 4 years old.. What i am trying to say.. Age is not a problem for studying any subject And you are a good teacher Thanku❤
Greetings and Salutations I researched blue atom pollution as a kiddo & went to further my education for pharmacy in college Now fresh out my 20's to recover has been the cicadas 2024 era Good luck huh?? Thanks
Bcoz calcium is a reactive metal if we do it 2,8,10 which doesnt give anysense related to stability rule as octet is based on 8 valence electron...so 2,8,8,2as it tells abt its reactive nature..ll
Thank me Later The electron configuration of calcium is 2,8,8,2 and not 2,8,10 because of how electron shells and subshells are organized in terms of energy levels. Even though the third shell (n = 3) can theoretically hold up to 18 electrons, these electrons are placed into subshells (s, p, d, etc.) based on their energy. The subshells fill in a specific order, not purely based on the number of electrons a shell can hold. Here’s the order of filling for calcium: First shell (n=1): 2 electrons in the 1s subshell. Second shell (n=2): 8 electrons (2 in the 2s subshell and 6 in the 2p subshell). Third shell (n=3): The 3s and 3p subshells are filled with 8 electrons (2 in the 3s and 6 in the 3p). At this point, only the 3s and 3p subshells are filled. Even though the third shell can hold up to 18 electrons, the next electrons after the 3p go into the 4s subshell (which is lower in energy than the 3d subshell, even though it belongs to the fourth shell). Fourth shell (n=4): 2 electrons go into the 4s subshell. So, for calcium (atomic number 20), its configuration ends up being 2,8,8,2 because the two additional electrons beyond the first 18 fill the lower-energy 4s subshell, not the 3d subshell. Once elements with more electrons are involved (e.g., transition metals), the 3d subshell starts filling.
Loved this video - I will definitely be back. Left school years ago, never studied Chemistry but need it for my Human Nutrition degree so here goes haha …
According to bohr-bury's 3rd rule valence shell doesn't have more than 8 electrons because if one electron has more than 8 electrons in its valence shell it becomes very unstable
@@farhatjahan2694 but no one can tell you 2,8,10 . Rather, it is 2,8,8,2 , which is not according to Bohr-Bury's rule NOTE: there was no concept of ORBITALS , PROBABILITY DENSITY, ELECTRON CLOUD at that time.
If the electrons move why we can't see the changes in things Earth moves around the sun so we are the witness of day and night Both a plant and a stone made up of atoms Plants are made up of atoms it grows Stone is also made up of atoms and electrons move around the nucleus inside of stone the stone doesn't change My question is if electrons move why it doesn't bring changes
What's the difference between the 2 atoms because they look the same and if it's like this also bhor's atom would collaps and I think it's save to say an atom should have one electron in each ring revolving around the nucleons
The electron configuration of calcium is 2,8,8,2 and not 2,8,10 because of how electron shells and subshells are organized in terms of energy levels. Even though the third shell (n = 3) can theoretically hold up to 18 electrons, these electrons are placed into subshells (s, p, d, etc.) based on their energy. The subshells fill in a specific order, not purely based on the number of electrons a shell can hold. Here’s the order of filling for calcium: First shell (n=1): 2 electrons in the 1s subshell. Second shell (n=2): 8 electrons (2 in the 2s subshell and 6 in the 2p subshell). Third shell (n=3): The 3s and 3p subshells are filled with 8 electrons (2 in the 3s and 6 in the 3p). At this point, only the 3s and 3p subshells are filled. Even though the third shell can hold up to 18 electrons, the next electrons after the 3p go into the 4s subshell (which is lower in energy than the 3d subshell, even though it belongs to the fourth shell). Fourth shell (n=4): 2 electrons go into the 4s subshell. So, for calcium (atomic number 20), its configuration ends up being 2,8,8,2 because the two additional electrons beyond the first 18 fill the lower-energy 4s subshell, not the 3d subshell. Once elements with more electrons are involved (e.g., transition metals), the 3d subshell starts filling.
Understand the periodic table you will definitely get your answer according to periodic table calcium ato has four shells and Calcium belongs to group 2 that's mean it's outermost shell will have 2 electrons that's why it's 2 ,8,8 ,2 not 2, 8 ,10
Why Ca atom fills like 2,8,8,2..... Explain it clearly,,, because the reason you said 2n² it can also fill like 2,8,10??.... You haven't said anywhere why it should be filled like 2,8,8,2?
We are not made up of trillions of atoms, we are made up of trillions of cells. A cell is made up of trillions of atoms. We are made up of roughly 100 trillion cells. Each cell is made up of roughly 100 trillion atoms. So we are made up of roughly 10 octillion (10^28) atoms.
The concept of atom was developed by Dr. John Dalton, a pioneer in multiple fields of science. And then E. Rutherford, J.J. Thomson, and other western eminent scientists. Why schools and teachers here are talking about their discoveries and inventions till date? Why don't they speak about indian discoveries and inventions? What stops them?
Why does it start k instead a ? Ans: Because the scientist who discovered it, he thought if there is more values below 2 8 8 18 what will we do . That was why he started from letter K so that in future if any number discovered below 2 8 8 18 then they can use the letters below the k i.e. G H I J
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Orbits start from K, because The electron orbit or energy level naming convention starts from K, not A, due to historical and scientific reasons.
Historical reason:
The naming convention originated from the early 20th-century spectroscopists, who used letters to label the spectral lines. They started with K (K-shell) for the innermost energy level, followed by L, M, N, and so on.
Scientific reason:
The K-shell corresponds to the principal quantum number n=1, which represents the lowest energy level or innermost orbit. The letters K, L, M, etc., are derived from the spectroscopic notation:
- K (n=1): 1s orbital (spherical symmetry)
- L (n=2): 2s and 2p orbitals (spherical and dumbbell-shaped)
- M (n=3): 3s, 3p, and 3d orbitals
- N (n=4): 4s, 4p, 4d, and 4f orbitals
The letters A, B, C, etc., were already used for other purposes in spectroscopy, such as labeling spectral series or transitions.
Modern notation:
Today, the Aufbau principle and the periodic table guide the electron configuration notation. The energy levels are labeled with numbers (1, 2, 3, ...) and letters (s, p, d, f) indicating orbital shapes.
However, the historical KLMN notation remains widely used, especially in X-ray spectroscopy and electron configuration shorthand.
The naming convention for electron shells in an atom originated from the spectroscopic notation used to classify atomic transitions. The first letter, "K," represents the sharp spectral lines in X-ray emissions. This convention extends to other shells as well, with subsequent letters like L, M, etc., denoting other spectral lines.
•One more version says that the "K" shell is named after the German word "Kante" which means "edge" in English. It's the closest to the nucleus and was discovered first, hence the name "K."
ok
ജാഡ പേട്ടത്തരം😂
Hello sir😊
The first shell of an atom is called the K shell because it's named after the K type X-ray, which is the highest energy X-ray an atom can emit
Sir could you please try to upload video on Structure of atom based on Quantum mechanics 😢
You are correct.
This man’s teaching is top notch ❤❤
Thanks!
I always understand your class
You made studies so so easy sir God bless 😭😢😢😭 🙏🙏🙏🙏🙏
I request sir can you upload video in how to find valency of any element in Hindi please don't ignore I also want to know these concepts 2,8,8,18,18,32,32 in my class room many people says 2,8,18,32 in correct but I was confused I hope you will solve it my this problem
2,8,8,18,18,32,32 is right.
see in periodic table 1st row has 2 element, 2nd has 8 , 3rd has 8, 4th has 18 (potassium to krypton), 5th has 18 (rubidium to xenon)
now, we have 2 row of 32,
1st as we go from
Caesium Barium Lanthanum (1st of those two extra row at last from Cerium to Lutetium ) (the original 6th row from hafnium to radon)
Yeah all of these from Caesium to Radon are 32 elements I know hard to understand but yeah it is what it is
and 2nd row of 32 elements has elements from Francium to Actinium then whole Actinoid (bottom most series) series then Rutherfordium to Oganesson.
9:01 Why is the electron configuration of Ca isn't *Calcium - 2, 8, 10* ? It's mentioned earlier in the video, that the third orbit line is also 2n² (2 x 3²).
if u dont understand tell me The electron configuration of calcium is 2,8,8,2 and not 2,8,10 because of how electron shells and subshells are organized in terms of energy levels.
Even though the third shell (n = 3) can theoretically hold up to 18 electrons, these electrons are placed into subshells (s, p, d, etc.) based on their energy. The subshells fill in a specific order, not purely based on the number of electrons a shell can hold.
Here’s the order of filling for calcium:
First shell (n=1): 2 electrons in the 1s subshell.
Second shell (n=2): 8 electrons (2 in the 2s subshell and 6 in the 2p subshell).
Third shell (n=3): The 3s and 3p subshells are filled with 8 electrons (2 in the 3s and 6 in the 3p).
At this point, only the 3s and 3p subshells are filled. Even though the third shell can hold up to 18 electrons, the next electrons after the 3p go into the 4s subshell (which is lower in energy than the 3d subshell, even though it belongs to the fourth shell).
Fourth shell (n=4): 2 electrons go into the 4s subshell.
So, for calcium (atomic number 20), its configuration ends up being 2,8,8,2 because the two additional electrons beyond the first 18 fill the lower-energy 4s subshell, not the 3d subshell.
Once elements with more electrons are involved (e.g., transition metals), the 3d subshell starts filling.
When 3rd shell can hold maximum 18 electron then why we don't put 10 electron in 3rd shell of Ca atom and put it in 2,8,10 manner
Thank you for your lesson very easy to understand.
I am on my 40s now and i wasn't study anything back in my school days.. now i am start studying for my kid of 4 years old..
What i am trying to say..
Age is not a problem for studying any subject
And you are a good teacher
Thanku❤
and so do I @61 years old
Greetings and Salutations
I researched blue atom pollution as a kiddo & went to further my education for pharmacy in college
Now fresh out my 20's to recover has been the cicadas 2024 era
Good luck huh?? Thanks
😂😂 5:45
if the third shell can hold 2n^2 = 2 × 3^2 = 18 then
why is calcium 2,8,8,2 and not 2,8,10
Fr, because isn’t it supposed to be 18 on the outermost shell?
Bcoz calcium is a reactive metal if we do it 2,8,10 which doesnt give anysense related to stability rule as octet is based on 8 valence electron...so 2,8,8,2as it tells abt its reactive nature..ll
@@dynamitecrew8153then why he didn't mentioned in this video🤔🤔🤔
@@Y.Rithesh he didnt explain properly whole terms ,just highlight the topic..
Outermost shell doesn't have more than 8 electrons that's why
Your explanation skills are very clear and easy to understand. Very nice video. Thank You.
FANTASTIC VIDEO!!! LOVED IT!!
8:03 8:03 8:04 8:06 8:06 8:06 8:06 8:07 8:07 8:07 8:07 8:07 8:07 8:08 8:08 8:08 8:08 8:09 8:09 8:09 8:09 8:09 8:09 8:10 8:10 8:10 8:10 8:10 8:11 8:11 8:11 8:11 8:11 8:11 8:12 8:12 8:12 8:12 8:12 8:13 8:13 8:13 8:13 8:13 8:13 8:14 8:14 8:14 8:14 8:14 8:15 8:15 8:15 8:15 8:15 8:16
For Ca why did the third shell have only 8 electrons.
9:05.sir, for ca why we written as 2,8,8,2.according to the bohr bury's rule, it should be 2,8,10
Right sir I also did it answer is same I'm confused
Thank me Later
The electron configuration of calcium is 2,8,8,2 and not 2,8,10 because of how electron shells and subshells are organized in terms of energy levels.
Even though the third shell (n = 3) can theoretically hold up to 18 electrons, these electrons are placed into subshells (s, p, d, etc.) based on their energy. The subshells fill in a specific order, not purely based on the number of electrons a shell can hold.
Here’s the order of filling for calcium:
First shell (n=1): 2 electrons in the 1s subshell.
Second shell (n=2): 8 electrons (2 in the 2s subshell and 6 in the 2p subshell).
Third shell (n=3): The 3s and 3p subshells are filled with 8 electrons (2 in the 3s and 6 in the 3p).
At this point, only the 3s and 3p subshells are filled. Even though the third shell can hold up to 18 electrons, the next electrons after the 3p go into the 4s subshell (which is lower in energy than the 3d subshell, even though it belongs to the fourth shell).
Fourth shell (n=4): 2 electrons go into the 4s subshell.
So, for calcium (atomic number 20), its configuration ends up being 2,8,8,2 because the two additional electrons beyond the first 18 fill the lower-energy 4s subshell, not the 3d subshell.
Once elements with more electrons are involved (e.g., transition metals), the 3d subshell starts filling.
You are a good teacher sir. Your site is having network issues. Kindly rectify it, it is very slow or many times it doesn't load.
Sir, you are very much needed for today's generation of class 10th kids appearing for board exams. Great job sir. Please continue 😊
DUDE LIKE WHY THE HECK R U SO GOOD AT TEACHIN!!! THIS HELPED ME IN MY HIGH SCHOOL DUDESKI
Since the 3rd shell can have a maximum of 18 electrons??
Fantastic explanation ❤.
I love the technique of your teaching learning becomes easier and interesting now...Thank you sir
In my olden days we missed these kind of teachings...
In ancient times English alphabet start with k so they written k, l, m, n,
is it right
Thanks
No
@@shalinijain966 so then tell me right answer plz
No you are wrong
Sir you are best teacher and say any chapter
I should understand
Thankyou sir
Loved this video - I will definitely be back. Left school years ago, never studied Chemistry but need it for my Human Nutrition degree so here goes haha …
Your teaching of mathod is very nice sir
Method ke spelling phele seekh
What a wonder video, learned a lot from this !
According Bohrs Burry electron configuration. Why does calcium have 2,8,8,2 instead of 2,8,10
The outermost shell should not contain more than 8 electrons according to bohr-bury's rules
9:00 why not 2,8,10 can samone explain me what I
'm doing worg here ?
You are really a great teacher, bravo to you❤❤
Sir how its 2,8,8,2
We can put 18 in 3rd shell right?
Exactly that’s my point
Ya I too have a doubt in that
According to bohr-bury's 3rd rule valence shell doesn't have more than 8 electrons because if one electron has more than 8 electrons in its valence shell it becomes very unstable
I got 2810
idiot
Where did u teach the electron configuration full
Sir formulla to 2n square hai phir calsium me 3 round me 18 electron kyo nahi?
Ca atom doesn't follow Bohr-Burys' rule here, why??
yeah!It follows you need to understand shells ,sub shells and orbitals first .
@@farhatjahan2694 but no one can tell you 2,8,10 . Rather, it is 2,8,8,2 , which is not according to Bohr-Bury's rule
NOTE: there was no concept of ORBITALS , PROBABILITY DENSITY, ELECTRON CLOUD at that time.
Me too
This is really a helpful video to understand about the Atom
Good explanation sir thanks 👍
For sure I learnt ❤😊
Wow explanation! Thanks!
Sir very deeply requested to upload about E=MCsquare , relativity theory
If the electrons move why we can't see the changes in things
Earth moves around the sun so we are the witness of day and night
Both a plant and a stone made up of atoms
Plants are made up of atoms it grows
Stone is also made up of atoms and electrons move around the nucleus inside of stone the stone doesn't change
My question is if electrons move why it doesn't bring changes
amazing question .
Have you get the answer of this question ?if yes please explain it for me 😊
Akhi Mohammed, imagine you turn on a fan for millions of years, will grow bigger or smaller by just turning?
What's the difference between the 2 atoms because they look the same and if it's like this also bhor's atom would collaps and I think it's save to say an atom should have one electron in each ring revolving around the nucleons
How will we get the calcium configration as 2,8,8,2
I also have the same question as M shell can contain 18 shells, then why 8 again. ?
How do you know tht cal has 20 electron
Ty sir helped me a lot
How to know how many electrons are there in a element
Thank you sir, very nice sir, your teaching style is very well
Thankyou sir aapne sabkuch clear kar diya
Sir.. I have a doubt.. Why can't the electron configuration of CL be written as 2,8,10??instead of 2,8,8,2???
In shell only 8 electrons only fit
Yes@@muraligamer9967
The electron configuration of calcium is 2,8,8,2 and not 2,8,10 because of how electron shells and subshells are organized in terms of energy levels.
Even though the third shell (n = 3) can theoretically hold up to 18 electrons, these electrons are placed into subshells (s, p, d, etc.) based on their energy. The subshells fill in a specific order, not purely based on the number of electrons a shell can hold.
Here’s the order of filling for calcium:
First shell (n=1): 2 electrons in the 1s subshell.
Second shell (n=2): 8 electrons (2 in the 2s subshell and 6 in the 2p subshell).
Third shell (n=3): The 3s and 3p subshells are filled with 8 electrons (2 in the 3s and 6 in the 3p).
At this point, only the 3s and 3p subshells are filled. Even though the third shell can hold up to 18 electrons, the next electrons after the 3p go into the 4s subshell (which is lower in energy than the 3d subshell, even though it belongs to the fourth shell).
Fourth shell (n=4): 2 electrons go into the 4s subshell.
So, for calcium (atomic number 20), its configuration ends up being 2,8,8,2 because the two additional electrons beyond the first 18 fill the lower-energy 4s subshell, not the 3d subshell.
Once elements with more electrons are involved (e.g., transition metals), the 3d subshell starts filling.
Electron configurations of calcium is 2,8,10
Good morning sir, I really appreciate your lesson 😊😊
Thank you 🙏 sir.
Why you written calcium Electrons =2,8,8,2
Why didn't you write = 2,8,10?
Understand the periodic table you will definitely get your answer according to periodic table calcium ato has four shells and Calcium belongs to group 2 that's mean it's outermost shell will have 2 electrons that's why it's 2 ,8,8 ,2 not 2, 8 ,10
Thank you for your explanation
Why Ca atom fills like 2,8,8,2..... Explain it clearly,,, because the reason you said 2n² it can also fill like 2,8,10??.... You haven't said anywhere why it should be filled like 2,8,8,2?
Your teaching is good
Sir what is nucleons and why its together called
Protons and neutrons are called nucleons both of them seen inside the nucleus that's the way the name came
Very interesting thanks sir dear sandeep manocha thanks teacher ❤
I want lecture on organic chemistry and also other types of chemistry please
K means is X Girl friend
Sir i am not able to understand anything.
Hello Sir Do you teach online classes?
Thanks alot 😊
Soo intresting video
Thanks👌👌
expressing concentration of solution sir ye topic bhi atom ch ka h iss pr bhi video bny
Why last orbit had only 2 electrons
I love the explanation
Thanx a lot sir
Pls explain in english my all doubts getting clear thanx a lots
Thanks a ton!
The geometry is trigonal bipyramidal
Very nice sir...
How can l join as a student
Oh wow in going through atoms chapter,and you suddenly popped out Thank you sir❤❤
I love your explanation 😘
I've been having problems with this topic before..but now I understand 😊
Sir have nothing to say is all about i just want more explanation nothing else cause I am behind of knowing this thing please.
good information SIR❤
Physics is where the question is to find the sun weight with distance from sun to earth like if you agree
I like it your teaching
Sir you are good teacher
very well explained!
Sir can you please say us electronic configuration please😅❤
I think you taught well well done
Awesome Video this was. Atoms are CRYSTAL CLEAR!!!
Sir please do KTG Class 11
Actually there are only 4 orbits in first 20 elements
We are not made up of trillions of atoms, we are made up of trillions of cells. A cell is made up of trillions of atoms. We are made up of roughly 100 trillion cells. Each cell is made up of roughly 100 trillion atoms. So we are made up of roughly 10 octillion (10^28) atoms.
Because k=2 ,l=8,m=8 ,n=2 they are known as electrons
Super Amezing episode
Thank you so much 😊
very very helpful
There is no specific reason why KLMN are shell names, they named KLMN just to confuse us, the students.😂😂😂
East or west this sir is best
Wow. Thanks for your best explanation. But please do not disapear during your journey to be atom. Come back we need you😂😂👍👍
Good teacher
Please sir I don't understand so how can I find a in I don't understand why you started with k
The concept of atom was developed by Dr. John Dalton, a pioneer in multiple fields of science. And then E. Rutherford, J.J. Thomson, and other western eminent scientists. Why schools and teachers here are talking about their discoveries and inventions till date? Why don't they speak about indian discoveries and inventions? What stops them?
Why does it start k instead a ?
Ans: Because the scientist who discovered it, he thought if there is more values below 2 8 8 18 what will we do . That was why he started from letter K so that in future if any number discovered below 2 8 8 18 then they can use the letters below the k i.e. G H I J
I am thinking the same way too, it makes sense!
Please I am going to write bece Please make a video on how to learn faster and smarter because when I learn nothing goes to my brain
K mean kotassium
L mean lithium
M mean magnesium
Very nice video