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An orbital is a one-electron wavefunction, usually derived by solving the Schrodinger equation. This tag applies to questions about all forms of orbitals; additionally, questions about the construction and properties of molecular orbitals should be tagged with [molecular-orbital-theory].

72 votes
4 answers
35k views

Why do elements in columns 6 and 11 assume 'abnormal' electron configurations?

Does this extra stability work with all half or completely filled orbitals, except columns 6 and 11 are the only cases where the difference is strong enough to 'pull' an electron from the s orbital? …
Gordon Gustafson's user avatar
101 votes
7 answers
140k views

Why is the 2s orbital lower in energy than the 2p orbital when the electrons in 2s are usual...

My chemistry book explains that even though electrons in the $\mathrm{2p}$ orbital are closer to the nucleus on average, electrons from the $\mathrm{2s}$ orbital spend a very short time very close t …
Gordon Gustafson's user avatar