Question

Which of the following has the maximum number of unpaired $d$ - electrons ?

• A. $Z{n}^{+}$
• B. $F{e}^{2+}$
• C. $N{i}^{3+}$
• D. $C{u}^{+}$

Answer 1

Answer: (B)

$F{e}^{2+}$ has maximum unpaired d electrons of $4.Z{n}^{2+}$ has no unpaired electrons.. $N{i}^{2+}$ has E2$unpairedelectronand$Cu ^{2+}$ has two electrons.