All Questions
Tagged with electrons physical-chemistry
98
questions
2
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0
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22
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Is the surface electron affinity of (tribasic) sodium- or calcium phosphate higher?
Let's imagine, we have two polycrystalline samples: $\ce{Ca3(PO4)2}$ and $\ce{Na3PO4}$. A free electron is added to both. Some heat is released.
I wanted to check whether my reasoning about this ...
- 256
7
votes
1
answer
170
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Overlap of wave functions in Franck-Condon principle
I was revisiting the Franck-Condon-principle and was wondering about one thing.
In the Franck-Condon principle, it is stated that if an electronic transition happens, the vibrational wave functions ...
- 415
0
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0
answers
36
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The existence of a principal quantum level or energy shell after the loss of an electron from the outer shell of an atom
With the loss of an electron from $\ce{Li}$ ($\mathrm{1s^2\ 2s^1}$), we get $\ce{Li+}$ ($\mathrm{1s^2}$), then the 2nd shell where the electron had been revolving in $\ce{Li}$ will get disappeared or ...
0
votes
1
answer
94
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How to compute solvent reorganization energy in Marcus' non-equilibrium approach?
I try to solve the following equations for some system solvated in the water. The goal is to obtain value in kcal/mol. Unfortunately, I cannot reach the desired output. May someone help me?
The ...
- 103
-1
votes
1
answer
266
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In JJ thomson's cathode ray experiment why is the effect of gravity on the electron not considered? [closed]
Explaining the setup:
The experiment is described in the picture.
Instead of the magnets in the picture imagine two circular coils on both the sides with current running through it, this creates a ...
- 35
2
votes
1
answer
65
views
How does the electron get back to the ground state at the energy level? [closed]
I have a doubt about how this emission process is carried out in the atom where we have the orbiting electron and we want the electron to return to the fundamental value.
I know that in absorption we ...
- 131
-1
votes
4
answers
160
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Electron orbitals
Can electrons be found anywhere within the space described by a 3D orbital "90% of the time" (as stated in my textbook)? But that would mean they can be found right next to the nucleus or in ...
- 11
4
votes
1
answer
711
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Length of a 1D box in hexa-1,3,5-triene
Problem
From Hayward's Quantum Mechanics for Chemists [1, p. 36]
2.3. Calculate the wavelength of light that will be absorbed when
a it electron in hexa-1,3,5-triene, $\ce{CH2=CH—CH=CH—CH=CH2},$ is ...
-1
votes
1
answer
140
views
Which is faster? Electron close to the atom's nucleus or the one far from it and why? [closed]
As we know when the distance between the atom's nucleus and the electron increase the energy of it increase but what about the speed, as physics say that the smaller the radius is the faster the body ...
- 9
-1
votes
2
answers
470
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Why is the d subshell only stable when all of its orbitals are filled? [closed]
I was learning about the Aufbau principle and quantum electronic configuration. Here are some of the yet-unanswered queries that I wish to know the answers to.
I discovered that the d subshell is ...
- 293
-3
votes
1
answer
524
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What does it mean when we say an atom has infinite energy levels/shells? [closed]
My chemistry teacher told that an atom has infinite energy shells according to Bohr model , where electron reside according to its angular momentum and energy.
But in lower classes/ grades I have ...
1
vote
0
answers
75
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What is the paramagnetic susceptibility of sodium at around room temperature?
Proposed solution:
This question comes from Tanner's manual Introduction to the Physics of Electrons in Solids, at the chapter dedicated to the application of the Fermi gas model. The Fermi energy is $...
- 39
3
votes
0
answers
471
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Shielding vs electron-electron repulsion
Example of shielding:
(source)
The last electron in the 6s subshell of $\ce {Cs}$ is shielded from the nucleus by the inner electrons.
Example of electron-electron repulsion:
The electron affinity of ...
user119245
-3
votes
2
answers
109
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What happens during a displacement reaction? [closed]
When Zn metal is added to a solution of Cu(II)SO4, Zinc displaces Cu to form ZnSO4 as Zn is more reactive than Cu. What I don't understand is how.
1- What I'm assuming is: Zn metal collides with [SO4]...
- 7
3
votes
3
answers
626
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How to Combine an Emission spectrum into a colour? [closed]
I am trying to wrap my head around the flame test, and for the most part, it is making sense. My question is their a way to figure out the colour of a flame of an unknown element given the emission ...
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