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20 September, 13:26

Which electron configuration represents an excited state for potassium atom

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  1. 20 September, 14:22
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    2-8-7-2 Would be the normal excited state for a potassium atom.
  2. 20 September, 14:42
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    1s2 2s2 2p6 3s2 3p5 4s2

    The first number and the letter represent the electron orbital. The second number represents how many electrons are in that orbital.
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