The solid $P C l_{5}$ exists as :

P C l_{3}

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P C l_{4}^{+}

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P C l_{6}^{-}

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P C l_{4}^{+}

and

P C l_{6}^{-}

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Solution

The correct option is D $P C l_{4}^{+}$ and $P C l_{6}^{-}$
In solid state, $P C l_{5}$ prefers to exist as oppositely charged ions like $[P C l_{4}]^{+}$ & $[P C l_{6}]^{-}$ as the ionic bonding enhances the crystalline nature.
Also, $[P C l_{4}]^{+}$ is tetrahedral while $[P C l_{6}]^{-}$ is octahedral, these structures fit well into each other providing extra stability to the soild structure.

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Similar questions

In solid state $P C l_{5}$ exists as

P C l_{5}

P C l_{4}^{+}

P C l_{6}^{-}

2 P C l_{5} ⇌ P C l_{4}^{+} + P C l_{6}^{-}

P C l_{5}

[P C l_{4}]^{+} [P C l_{6}]^{-}

P C l_{5}

[P C l_{4}]^{+} [P C l_{6}]^{-}

P C l_{5} (s)

P C l_{4}^{+}

P C l_{6}^{-}

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