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WAEC - Chemistry (2018 - No. 19)

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

3s orbital

2p\(_{x}\)

2s orbital

1s orbital

Selitys

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

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

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