The `AsF_5` molecule is trigonal bipyramidal. The orbitals used by As for hybridisation are

Options

A. `d_(x^(2)-y^(2)),d_(z),s,p_(x),p_(y)`
B. `d_(xy),s,p_(x),p_(y),p_(z)`
C. `p,p_(x),p_(y),p_(z),d_(z^(2))`
D. `d_(x^(2)-y^(2)),s,p_(x),p_(y),p_(z)`

Answer

C

Explanation

The electronic configuration of As is
As `[Ar]3d^(10) underset(darr sp^(3) d "hybridisation") ubrace(4s^(1)4p_(x)^(1) 4p_(y)^(1)4p_(z)^(1)4d^(1))`
Thus the hybridisation involved in the AsF, molecule is trigonal bipyramidal. So, the hybrid orbitals used are `s.p_(x),p_(y),p_(z),d_(x),2`