Atomic StructureHard

Question

Which of the following is electronic configuration of Cu2+ (Z = 29) ?

Options

A.[Ar]4s1 3d8
B.[Ar]4s2 3d10 4p1
C.[Ar]4s1 3d10
D.[Ar]3d9

Solution

Cu : 1s22s22p63s23p63d104s1.
∴  Cu2+ : 1s22s22p63s23p63d9 or [Ar]3d9.

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