Question

Which of the following species is paramagnetic?
1. $T{i}^{4+}$,
2. $F{e}^{2+}$
3. $Z{n}^0$

• A. $2$ only
• B. $3$ only
• C. $1$ and only
• D. $2$ and $3$ only

Answer 1

The correct option is A $2$ only

Consider the electronic configurations of the options:-
1)$T{i}^{4+}-\left[Ar\right]$ - No unpaired electrons.
2)$F{e}^{2+}-\left[Ar\right]3d^6$ - $4$ unpaired electrons.
3) $Zn-\left[Ar\right]4s^{2}3d^{10}$ - No unpaired electrons.
Hence only 2 is paramagnetic.