Atomic StructureHard
Question
Which of the following ions has the maximum number of unpaired d-electrons?
Options
A.Zn2+
B.Fe2+
C.Ni3+
D.Cu+
Solution
Zn2+ : [Ar] 3d10 (0 unpaired electrons).
Fe2+ : [Ar] 3d6 (4 unpaired electrons) maximum.
Ni3+ : [Ar] 3d7 (3 unpaired electrons).
Cu+ : [Ar] 3d10 (0 unpaired electrons).
Fe2+ : [Ar] 3d6 (4 unpaired electrons) maximum.
Ni3+ : [Ar] 3d7 (3 unpaired electrons).
Cu+ : [Ar] 3d10 (0 unpaired electrons).
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