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3 votes

How did scientists prove that electron configuration was true if we do not know exactly where electrons are?

There's an either-or statement in your question that you can remove. An electron configuration is a simplified representation of an approximate model of the actual electronic structure. It is an ...
Buck Thorn's user avatar
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3 votes

Why are p orbitals most important for stability?

This question is legitimate, I do not know if this will be give a complete answer, but here is the basic principle. We have to define first the orbital at the outermost shell. When you have to solve ...
M06-2x's user avatar
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2 votes
Accepted

where could I find the standard atomic orbital energy of all elements?

NIST is a reasonable place to start. They've posted data from electronic structure calculations using DFT online (Ref 1) . However it looks like you might need to scrape the site to extract the ...
Buck Thorn's user avatar
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2 votes
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Nephelauxetic effect and covalency of metal-ligand bonds

The Racah repulsion parameters are smaller in a transition metal complex than in a free atomic ion because Decreased effective nuclear charge: As the effective charge localized at the metal decreases,...
ChemWes's user avatar
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2 votes
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Ionization Energy equal to single electron energy

The ionization energy is the energy deficit the bound electron has with respect to the energy of a free electron in rest. So, if the ionization energy of a $\ce{H}$ atom is $\pu{13.6 eV}$ and if we ...
Poutnik's user avatar
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1 vote
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Based on RPDs, how to tell which orbital ($2s$ vs $2p$ or $4s$ vs $3d$) is more stable ? How reliable is the "less shielded" argument?

Note that, since these plots are almost always referencing strictly hydrogenic orbitals, you can actually calculate and plot them yourself. Here are a variety of plots that you can peruse through that ...
legolizard's user avatar
1 vote
Accepted

On the relativistic contraction of orbitals

The $d$ and $f$ orbitals do not expand due to the speed (or more accurately, the ratio of energy drawn from the electrostatic field to the rest mass-energy) of the innermost electrons in those ...
Oscar Lanzi's user avatar
1 vote
Accepted

Is the energy difference between the 2s and 2p orbital smaller than the difference between 3s and 3p?

The energy difference between the s and p orbitals increases with atomic number As the atomic number increases, the nuclear charge increases and the electrons move closer to the nucleus. This reduces ...
Rocio Torres's user avatar
1 vote

Why does the two OH bonds in H2O have different bond disassociation enthalpies? How does the bond cleavage happen here?

Two $\ce{OH}$ bonds in any molecule have different dissociation enthalpies, as only the first one is related to the original molecule. The second one is related to the original molecule with the ...
Poutnik's user avatar
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1 vote

How does the concept of the electron shell (also called energy level) and the orbital coexist?

There always coexist several models for historical and educational reasons. Especially the latter is based on several levels of trade off between accuracy and simplicity. If we take mechanical work: ...
Poutnik's user avatar
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1 vote

Confusion about the number of microstates for orbitals

I will explain in details why I stated (in the comments) that some states are inconsistent. The spin-orbit (S.O) coupling correlates the orbital angular momentum $\vec{L}$ and the spin angular ...
M06-2x's user avatar
  • 563
1 vote

Why is the $\mathrm d_{z^2}$ orbital so different from the rest?

It's a matter of counting, really, if you are aware of what you are counting. We may regard the angular dependence of the four-lobe functions at any radial distance $r$ as follows: $(a_1x+b_1y+c_1z)(...
Oscar Lanzi's user avatar

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