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5:35 AM
2
Q: Is an element's "atomic electron configuration" EXACTLY equal to the term with the largest coefficient in the CI series of the neutral atom?

NoviceChemist2001For atoms and molecules with more than one electron, the wavefunction cannot be written as a single Slater determinant, so the ground-state configuration of (the atom or molecule in question) is defined as the configuration whose Slater determinant has the largest (in absolute value) coefficient ...

2
Q: Would the hydrogen-bonded polymer hexaamminecobalt(III) hexakis(trifluoromethyl)cobaltate(III) be soluble in water?

Kanghun KimIt is clear that both the hexaamminecobalt(III) ion and the hexakis(trifluoromethyl)cobaltate(III) ion are both low spin (the former is already low spin, and the trifluoromethyl ligand is clearly softer than the ammine ligand) and therefore valence isoelectronic to each other, since the Jahn-Tell...

 
6:01 AM
1
Q: Contribution, and the way thereof, of the core 6p orbitals of compounds of plutonium(VIII)

Kanghun KimAccording to the NIST database, the ground-state configuration of plutonium(VIII) is [Hg]5f³6p³, when intuitively it should be the same as neutral radon([Hg]6p⁶). Since plutonium(VIII) compounds are already known, there are two problems: the plutonium(VIII) cation is paramagnetic; the core 6p sh...

 
 
4 hours later…
9:47 AM
0
Q: So long, and thanks for all the fish

orthocresolIt makes me slightly sad to write this, but after having been a moderator for more than five years, I will be stepping down later this month. This is primarily because I don't have enough time and effort to devote to SE anymore, which is in turn because of Real Life. Most of you will no doubt hav...

 
 
12 hours later…
9:46 PM
1
Q: Why is orbital energy not the mean between ionization energy and electron affinity when the orbital has two electrons?

Oscar LanziIn this question it is asked why ferrocene is colored when the HOMO-LUMO gap seems to be beyond the visible light range. I tried to answer that orbital energies change with electronic transitions and therefore the transition energy need not match the difference in orbital energies. However, my an...

 

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