Configuration that shows the highest energy released when an electron is added to the atom is

  1. A

    1s2 2s2 2p3

  2. B

    1s2 2s2 2p5

  3. C

    1s2 2s2 2p1

  4. D

    1s2 2s2 2p6

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    Solution:

    Halogen- 1s22s22p5

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