1. Tardigrade
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  3. Chemistry
  4. The number of unpaired electrons in Fe 3+ ion is.

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Q. The number of unpaired electrons in $Fe ^{3+}$ ion is_____.

Structure of Atom

Solution:

Electronic configuration of $Fe ^{3+}$ is
$1 s^{2}\, 2 s^{2}\, 2 p^{6} \, 3 s^{2} \, 3 p^{6}\, 3 d^{5}$
No, of unpaired $e ^{-}=5$