The electron configuration of X2+ ion is
A)1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^2 B)1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^1 C)1s^2 2s^2 2p^6 3s^2 3p^6
D)1s^2 2s^2 2p^6 3s^2 3p^6 4s^2
Pls prove your answer.?
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Asked by Ochuko on 16th February, 2019
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