The valence electrons of \(_{12}Mg\) are in the

A.

3s orbital

B.

2p\(_{x}\)

C.

2s orbital

D.

1s orbital

View answer & explanation

Correct answer is A

\(_{12}Mg = 2, 8, 2\)

\(= 1s^{2} 2s^{2} 2p^{6} 3s^{2}\)

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