Q53 / 180 · KCET 2023 · Chemistry

In solid state, $\mathrm{PCl}_5$ is a/an

  • A
    octahedral structure
  • B
    ionic solid with $\left[\mathrm{PCl}_6\right]^{+}$and $\left[\mathrm{PCl}_4\right]^{-}$
  • Correct answer
    C
    ionic solid with $\left[\mathrm{PCl}_4\right]^{+}$and $\left[\mathrm{PCl}_6{ }^{-}\right.$
  • D
    covalent solid present in the form of $\mathrm{P}_2 \mathrm{Cl}_{10}$

Solution

$\mathrm{PCl}_5$ is an ionic solid composed of $\left[\mathrm{PCl}_4\right]^{+}$ions and $\left[\mathrm{PCl}_6\right]^{-}$ions. In an ionic solid, there is a transfer of electrons between atoms, resulting in the formation these cations and anions. These opposite charged ions held together by electrostatic forces forming a crystal lattice structure.

Hence, the correct answer is option: 'C'.

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