The correct order of number of unpaired electrons in the ions Cu2+
, Ni2+
,
Fe3+ and Cr3+ is
(A) Cu2+ > Ni2+ > Cr3+ > Fe3+ (B) Cr3+ > Fe2+ > Ni2+ > Cu2+
(C) Fe3+ > Cr3+ > Cu2+ > Ni2+ (D) Fe3+ > Cr3+ > Ni2+ > Cu2+
.
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Answer:
D) is the correct answer
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