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college Chemistry

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Which is not a ground state electron configuration?
A. 1s2
B. 1s2 2p1
C. 1s2 2s2
D. 1s2 2s2 2p1

  • college Chemistry -

    B. because it jumps straight from 1s2 to 2p1
    it has to go :: 1s2 2s2 then 2p1

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