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  • Jan 16, 2013, 11:43 AM
    DEEFRESCA
    electron configuration
    Please help! The answer I got is 3 (not correct according to the answer key) and I'm not sure why?

    The electron configuration of a particular neutral atom is:
    1s^2 2s^2 2p^6 3s^2 3p^2.

    What is the number of unpaired electrons in this atom?
  • Jan 17, 2013, 11:45 AM
    wallykap
    They should all be paired

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