All Questions
Tagged with electrons atomic-structure
41
questions
29
votes
3
answers
6k
views
Do electrons have some volume, area or shape?
I am in 8th grade now and when I was in 6th grade, my science book had diagrams of the electronic configuration of atoms. The electrons were round like spherical balls. Is it true that the electrons ...
- 401
6
votes
2
answers
946
views
Why is there an orbital angular momentum if the electron isn't properly revolving around the nucleus?
I'm a tenth grader who's just been introduced to this subject of atomic structure, so please help.
I recently read that an electron doesn't have circular motion around a nucleus, its motion is kind ...
- 101
5
votes
1
answer
1k
views
Why is it that protons and electrons undergo the same amount of deflection in an electric field if they have the same energy?
The question I have is with respect to this diagram. Which depicts a stream of protons and electrons entering a proton field with equal energy.
Why is it that in the case where the energy of protons ...
user104941
4
votes
3
answers
1k
views
Does electron mass decrease when it changes its orbit?
I have studied this in my chapter atomic structure that when an electron changes its orbit from lower energy to higher energy state , it does not state in my book that it moves there but that it ...
- 412
4
votes
2
answers
2k
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Why did J.J. Thomson observe protons in his cathode ray experiment?
In this MIT lecture, at 7:22, the professor says that when J.J. Thomson added a positively charged plate on one side of the cathode ray and a negatively charged plate on the other side, he observed a ...
- 341
4
votes
1
answer
1k
views
Volume of orbitals
As I was learning about atomic structure, the lecturer made a seemingly dubious claim:
The volume of a p orbital is one-third that of the s orbital. Thus, inter-electronic repulsions are ...
- 10.7k
4
votes
0
answers
733
views
Did JJ Thomson know about Eugen Goldstein’s experiment discovering canal rays?
We learn that JJ Thomson discovered the electron in 1897. Several years EARLIER in 1886, Eugen Goldstein performs the same experiment but with the anode and cathode switched to produce positively ...
- 803
3
votes
3
answers
7k
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Which atom is the smallest atom?
Is hydrogen or helium the smallest atom? My teacher said that the smallest atom is the helium atom, but I think that the smallest atom is the hydrogen atom. It has a single electron and a single ...
user100905
3
votes
2
answers
1k
views
Why do subshells and orbitals exist? [closed]
I'm just a curious high school student. Sorry if this sounds dumb.
How exactly did the concept of atomic subshells and orbitals come about? And why exactly are there n-1 subshells and 2l+1 orbitals?
...
3
votes
1
answer
427
views
If charge is quantised, how can It delocalize?
As I was trying to understand resonance, I got to know that it was imaginary phenomenon and it is just a tool to explain mechanisms and structures that are unexplained by Lewis dot structures or ...
- 177
3
votes
1
answer
431
views
How did Thomson calculate the momentum of electron when he didn't know the mass of electron?
This was proven in 1903 by J. J. Thomson who calculated that the momentum of the electrons hitting the paddle wheel would only be sufficient to turn the wheel one revolution per minute. source
J. J. ...
- 629
2
votes
1
answer
3k
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Electron pairing in atoms
A question asks:
This question refers to isolated gaseous atoms. In which atom are all electrons paired? Ba, Br, S or Si?
I thought it was Ba as its electron configuration is [Xe] 6s2.
However, ...
- 205
2
votes
2
answers
533
views
What does Bohr's model predict if the mass of an electron becomes 10 times its actual mass? [closed]
If the mass of an electron becomes 10 times its actual mass, which of the following statements is correct regarding Bohr's model:
Velocity of electron increases by 10 times.
Orbit radius decreases by ...
2
votes
2
answers
732
views
Relationship between Quantum Numbers and the Wave-function
I recently started learning about quantum mechanics and its applciations in atomic structure in chemistry.
In this inorganic textbook Inorganic Chemistry, it describes
"Each of the wavefunctions ...
- 197
2
votes
1
answer
3k
views
What is the average distance between electron 'shells' in an atom? Or between the innermost shell and the nucleus? [closed]
Somehow, I've never come across any mention of the actual, physical distances between, say the 1s and 2s shells in an atom, whether large or small....
I know that p, d and f (and g?) shells are oddly ...
- 1,795