Question

Unpaired electrons in mn 2+

Answer 1

5 unpaired electrons because electronic configuration of Mn is {Ar}3d5 4s2 and when we have to remove 2 electrons then they must be removed from the outermost shell I.e 4s that's why the final electronic configuration becomes {Ar}3d5 where 3d subshell is half filled therefore 5 unpaired electrons.
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