GACE Chemistry (712) Practice Questions - GACE Chemistry (6-12) (712) Assessment Exam

Which of the following is the correct ground-state electron configuration for a neutral oxygen atom (Z = 8)?

1s2 2s2 2p4 1s2 2s2 2p6 1s2 2s2 2p2 1s2 2s4 2p2

Correct Answer:

1s2 2s2 2p4

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