Considering x-axis as the internuclear axis, which out of the following will not form a sigma bond and why ? (a) s and1s(b) 1s and 2p_(x) (c) 2p_(y) and 2p_(y) (d)1s and 2s.

Considering x-axis as the internuclear axis, which out of the followin

1.	Considering x-axis as the internuclear axis, which out of the following will not form a sigma bond and why ? (a) s and1s(b) 1s and 2p_(x) (c) 2p_(y) and 2p_(y) (d)1s and 2s.
Answer» Solution :Only (C)will not form a `sigma ` - bond because taking x-AXIS as the intermolucular axis , there will be LATERAL (sideway) overlap between the TWO ` 2p_(y)` orbitals forming `pi` bond .