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Pertanyaan

which of the atoms and ions 1) to 4) has a different electron configuration from those of the others?

1) F-
2) Ne
3) Na+
4) Ar

1 Jawaban

  • F- : [He] 2s2 2p6
    Ne : [He] 2s2 2p6
    Na+ : [He] 2s2 2p6
    Ar : [Ne] 3s2 3p6

    So, the answer must be (4) Ar -> (D)

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