OSAT Chemistry Practice Questions - Oklahoma Subject Area Test Chemistry (104) Exam

Which electron configuration is correct for neutral magnesium?

1s2 2s2 2p6 3s2 1s2 2s2 2p8 1s2 2s2 2p6 3p2 1s2 2s2 2p6 4s2

Correct Answer:

1s2 2s2 2p6 3s2

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