ORELA Chemistry (NT321) Practice Questions - Oregon Educator Licensure Assessments Chemistry (NT321) Exam

Which ground-state electron configuration represents a neutral magnesium atom?

1s2 2s2 2p6 1s2 2s2 2p6 3s1 1s2 2s2 2p6 3s2 1s2 2s2 2p6 3s2 3p6

Correct Answer:

1s2 2s2 2p6 3s2

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