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The question asks you to write the valence electron configuration of S22-. The answer is 1?g^2 2?u^23?g^21?u^42?g^4 ; I can write the valence electron configs for the period 2 homonuclear diatomic molecules, but I don't understand the coefficients for this gerade/ungerade notation. If someone could please help me understand the energy and MO concepts involved with this electron configuration I would appreciate it

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Category:- Chemistry
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