Question

Which of the following ions has the highest magnetic moment?

• A. $T{i}^{3+}$
• B. $S{c}^{3+}$
• C. $M{n}^{2+}$
• D. $Z{n}^{2+}$

Answer 1

Answer: (C)

The electronic configuration or given ions are: $T{i}^{3+}(19)=1s^2,2s^{2}2p^6,3s^{2}3p^{6}3d^1$ $S{c}^{3+}(18)=[Ar]$ $M{n}^{2+}(23)=[Ar]3d^5$ $Z{n}^{2+}(28)=[Ar]3d^{10}$ As, $M{n}^{2+}$ has maximum number of unpaired electrons (5), hence, it shows maximum magnetic moment.