Pick out the incorrect statement

Options

A. In `PCl_5`, P atom is `sp^(2)"d-hybridized"` and has triganal bipyramidal geometry.
B. `PCl_5` on hydrolysis forms le-acids
C. `PCl_5` acts as Lewis acid
D. In `PCI_5` the axial chlorine atoms are closer to central P atom than equatorial chlorine atoms.

Answer

D

Explanation

This is clear from structure of `PCl_(5)` given below.

Lewis structure of `PCl_(5)` has five electron pairs. According to VSEPR theory, the orientation of five electron pairs in trigonal bipyramida. To accomodate five electron pairs in trigonal bipyramidal orientation, P atom is `sp^(3)` d-hybridized. Since all the five `sp^(3)`-hybrid orbitals have bond pairs, therefreo, the geometry of `PCl_(5)` is also trigonal bipyramidal.
(b) `PCl_(5)+4H_(2)O to H_(3)PO_(4)+5HCl`
(c) It is because the central P atom can easily accept the halide ion (a Lewis base), due to presence of vacant d-orbital in its valence shell
`underset("Lewis acid")(PCl_(5))+underset("Lewis base")(4H_(2)O) to H_(3)PO_(4)+5HCl`