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Neutral Magnesium has 12 electrons and we will investigate its structure in some details. We assume...

Neutral Magnesium has 12 electrons and we will investigate its structure in some
details. We assume that LS-coupling is a good approximation for this system.
a) Derive the lowest, in energy, and the first excited electron configurations
for neutral Magnesium.
b) Derive all terms and levels in these two configurations!

I need help with this two questions please.

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