The hybrid states of phosphorous atoms in each `PCl_(5)` and `PBr_(5)` in gasesous phase are `sp^(3)d`. But, in solid `PCl_(5)`,phosphorous shows `sp^(3)d^(2)` and `sp^(3)` hybrid states. While,P in `PBr_(5)` is in`sp^(3)` hybrid state. This is because:

Options

A. `PCl_(5)` in solid form exists as `[PCl_(4)]^(+)[PCl_(6)]^(-)`
B. `PBr_(5)` in solid form exists as `[PBr_(4)]^(+)[PBr_(6)]^(-)`
C. `PCl_(5)` in solid form exists as `[PCl_(4)]^(+)Cl^(-)`
D. `PBr_(5)` in solid form exists as `[PBr_(4)]^(+)Br^(-)`

Answer

A, D