Magnesium forms a monatomic ion that has the electron configuration of a noble gas. What is the electron configuration of that noble gas?
A) 1s2 2p6
B) 1s2 2s2 2p6
C) 1s2 2s2 2p6 3s1
D) 1s2 2s2 2p6 3s2
E) 1s2 2s2 2p6 3s2 3p6
Correct Answer:
Verified
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