Question

Which of the following is most paramagnetic : $V^{3+},F{e}^{2+},V^{4+},T{i}^{2+}$

• A. $V^{3+}$
• B. $F{e}^{2+}$
• C. $V^{4+}$
• D. $T{i}^{2+}$

Answer 1

The correct option is B $F{e}^{2+}$

Valence configuration
$V^{3+}:3d^2$ no of unpaired $e^{-}=2$
$F{e}^{2+}:3d^6$ no of unpaired $e^{-}=4$
$V^{4+}:3d^1$ no of unpaired $e^{-}=1$
$T{i}^{2+}:3d^2$ no of unpaired $e^{-}=2$