What is the ground-state electronic configuration of a magnesium cation (Mg2+) ?
A) 1s2, 2s2, 2p6
B) 1s2, 2s2, 2p6, 3s1
C) C. 1s2, 2s2, 2p6, 3s2
D) D. 1s2, 2s2, 2p6, 3s2, 3p2
Correct Answer:
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