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Q.
In solid state $PCl_5$ is a _______.
The p-Block Elements - Part2
Solution:
In solid state $PCl _{5}$ tries to exist as oppositely charged ions like
(1) $PCl _{4}^{+}$ and $(2) PCl _{6}^{-}$ as the ionic bonding enhances the crystalline nature. also $P Cl _{4}^{+}$ is tetrahedral, while $PCl _{6}^{-}$ is octahedral these structure fit well into each other which gives more stability to solid structure. Hence option D is correct.