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Question 1

0votes

1answer

83views

Where Is the Potential Energy Stored in an Ionized Atom?

In its original usage, potential energy refers to the increase in a system’s energy when a mass is lifted in a gravitational field.By analogy, the concept also applies to removing an electron from an ...

HolgerFiedler

11.1k

askedNov 16 at 18:05

Question 2

1vote

1answer

44views

Why are there no $\rm Si$ $3p$ peaks in XPS spectra of Silicon?

In XPS spectra of Silicon we only see $\rm Si$ $2s$ and $\rm Si$ $2p$ peaks. Why no $\rm Si$ $3s$ or $\rm Si$ $3p$ peaks? Silicon has electrons in both the $3s$ and $3p$ orbitals that could be emitted ...

McQuanta

41

askedNov 16 at 1:23

Question 3

0votes

1answer

94views

Why are the principal quantum number $n$, orbital angular momentum quantum number $l$, and magnetic quantum number $m$ so important for hydrogen atom?

They commute with each other and are therefore good quantum numbers. Furthermore, the energy is the eigenvalue in the time-independent Schrödinger equation. But are there other reasons I missed?

Happy

17

askedOct 24 at 9:05

Question 4

4votes

1answer

491views

Atomic orbitals of elements

Why is the sequence of atomic orbitals (1s, 2s, 2p, 3s, 3p, 4s, 3d, …) the same for all elements, cf. the Aufbau principle, even though different elements have different numbers of electrons?

renormalizedQuanta

628

askedOct 19 at 5:53

Question 5

2votes

1answer

146views

Why does supercontinuum generation look like hydrogen orbitals?

I have been researching online about supercontinuum generation, and came across the website of the Ultrafast and Nonlinear Optics Lab at Penn State. The site provides some info about ultrafast optics ...

Jonathan Huang

1,124

askedSep 11 at 19:11

Question 6

2votes

1answer

175views

Associated Legendre equation solution for the angular equation

So in Griffith's, after doing separation of variables on the angular equation $$ \sin\theta \frac{\partial}{\partial\theta}(\sin\theta \frac{\partial Y}{\partial\theta}) + \frac{\partial^2 Y}{\partial ...

Mark A

153

askedSep 5 at 6:30

Question 7

2votes

3answers

438views

What is the electric field in a ground state hydrogen atom in QM?

A hydrogen atom in its ground state is neutral and the electron wave function is spherically symmetric.So although the wave function doesn't represent a charge density it makes sense to me that the ...

kangermu

943

askedSep 3 at 21:17

Question 8

8votes

5answers

2kviews

Why can we ignore the effect the electron has on the EM field in electron orbitals in quantum mechanics?

It is a well known fact in the history of quantum mechanics that the standard classical orbital model produced issues, since an accelerating charge would release radiation causing it to lose energy ...

VgAcid

209

askedAug 24 at 20:49

Question 9

7votes

2answers

566views

Why do Linear Combinations of Atomic Orbitals form sufficient approximations of molecular orbitals?

(Assuming no relativistic effects or electron-electron interactions for this question)First: Am I correct in thinking that Linear Combinations of Atomic Orbitals (LCAOs) are generally good ...

minerharry

207

askedAug 24 at 17:39

Question 10

2votes

2answers

267views

Why are there two different types of visual depictions of electron orbitals?

I was refreshing myself on electron orbitals and quantum numbers. I’m seeing two different looking depictions of some of these orbitals.the second diagram aligns more with what i’m reading on the ...

cyalatergator

105

askedAug 17 at 2:03

Question 11

4votes

5answers

873views

Quantum model of atom [duplicate]

When I was analyzing the structure of the atom (i'm new at this), the problem arose in the understanding of the motion of the electron. I realized that the electron cloud is just the probability of ...

Heil

49

askedAug 13 at 11:32

Question 12

1vote

0answers

126views

Why did Bohr assume circular electron orbits, despite inverse-square forces allowing elliptical ones? [closed]

In Bohr’s model of the hydrogen atom, electrons are assumed to orbit the nucleus in circular paths under the Coulomb force. However, under inverse-square law forces (like gravity or electrostatics), ...

ABHISHEK YADAV

11

askedJul 23 at 5:25

Question 13

0votes

0answers

99views

Approxiamte Atom-wise energy from Hartree-Fock calculation

Is there a way to get atom-wise energies from an ab initio calculation like Hartree-Fock?I will describe some ideas we had and would appreciate any critique, corrections, or alternative suggestions....

leon w

11

askedJul 14 at 16:20

Question 14

4votes

1answer

1kviews

(Townsends QM) Why does the 47th electron of Ag have no orbital angular momentum?

In justifying the conclusion of the Stern-Gerlach experiment, Townsends claims:Silver atoms are composed of 47 electrons and a nucleus. Atomic theory tells us the total orbital and total spin ...

Stephen Premel

61

askedJun 9 at 19:16

Question 15

6votes

2answers

365views

Are the orbitals listed in an atomic electron configuration the usual hydrogen-atom orbitals?

I'm familiar with the fact that the exact electronic ground state of a nonrelativistic multi-electron atom (with $n>1$ electrons) is generically an entangled state $|\Psi\rangle$ in the full, ...

tparker

52.3k

askedJun 3 at 4:26

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Stack Exchange Network

Questions tagged [orbitals]

Where Is the Potential Energy Stored in an Ionized Atom?

Why are there no $\rm Si$ $3p$ peaks in XPS spectra of Silicon?

Why are the principal quantum number $n$, orbital angular momentum quantum number $l$, and magnetic quantum number $m$ so important for hydrogen atom?

Atomic orbitals of elements

Why does supercontinuum generation look like hydrogen orbitals?

Associated Legendre equation solution for the angular equation

What is the electric field in a ground state hydrogen atom in QM?

Why can we ignore the effect the electron has on the EM field in electron orbitals in quantum mechanics?

Why do Linear Combinations of Atomic Orbitals form sufficient approximations of molecular orbitals?

Why are there two different types of visual depictions of electron orbitals?

Quantum model of atom [duplicate]

Why did Bohr assume circular electron orbits, despite inverse-square forces allowing elliptical ones? [closed]

Approxiamte Atom-wise energy from Hartree-Fock calculation

(Townsends QM) Why does the 47th electron of Ag have no orbital angular momentum?

Are the orbitals listed in an atomic electron configuration the usual hydrogen-atom orbitals?

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