Question

Using valence bond theory, the complex $\left[Cr\right(H_{2}O{)}_6{]}^{3+}$ can be described as?

• A. $s{p}^3{d}^2$, outer orbital complex, paramagnetic
• B. $ds{p}^2$, inner orbital complex, diamagnetic.
• C. $d^{2}s{p}^3$, inner orbital complex, paramagnetic
• D. $d^{2}s{p}^3$, outer orbital complex, diamagnetic.

Answer 1

The correct option is C $d^{2}s{p}^3$, inner orbital complex, paramagnetic

Using Valance bond theory

$\left[Cr\right(H_{2}O{)}_6{]}^{3+}\Rightarrow C{r}^{3+}\Rightarrow \left[Ar\right]\left[3d^3\right]$

Refer to image 01

1. Paramagnetic

2. $d^{2}s{p}^3=$Inner orbital Complex.