In which of the following molecular shape `d_(z^(2))` orbital must not be involved in bonding ?

Options

A. Pentagonal planar
B. Trigonal planar
C. Linear
D. Square planar

Answer

B

Explanation

(a) Pentagonal planar `to sp^(3)d^(3)[s+p_(x)+p_(y)+p_(z)+d_(x^(2)-y^(2))+d_(z^(2))+d_(xy)]`
(b) Trigonal planar `to sp^(2)[s+"Any two p"]`
(c ) Linear `to sp^(2)[s+"any one p"]`
`to sp^(2)`[s+any two p]
`to sp^(3)[s+p_(x)+p_(y)+p_(z)]`
`to sp^(3)d[s+p_(x)+p_(y)+p_(z)+d_(x^(2))]`
(d) Square planar `to sp^(3)d^(2)[s+p_(x)+p_(y)+p_(z)+d_(x^(2)-y^(2))+d_(z^(2))]`