Question

In solid state $PC{l}_5$ exist as an ionic solid $\left[PC{l}_4{]}^{+}\right[PC{l}_6{]}^{-}$ hybridisation state of cation and anion respectively :

• A. $ds{p}^2,s{p}^3{d}^2$
• B. $s{p}^3,s{p}^3{d}^2$
• C. $s{p}^3{d}^2,s{p}^3$
• D. $s{p}^3{d}^2,ds{p}^2$

Answer 1

The correct option is B $s{p}^3,s{p}^3{d}^2$

In the solid state it exists as an ionic solid, ${\left[PCl4\right]}^{+}{\left[PCl6\right]}^{-}$. The cation, ${\left[PCl4\right]}^{+}$ is tetrahedral and ${sp}^3$ hybridised. The anion, ${\left[PCl6\right]}^{-}$ is octahedral and is ${sp}^3{d}^2$ hybridised.