Question

Considering $x$-axis as the internuclear axis, which out of the following will not form a sigma bond.

• A. 1s and 1s
• B. 1s and $2{{p}_{x}}$
• C. $2{{p}_{y}}$ and $2{{p}_{y}}$
• D. 1s and 2s

Answer 1

Answer: (C)

$2{{p}_{y}}$ and $2{{p}_{y}}$

Answer 2

$2{{p}_{y}}$ and $2{{p}_{y}}$ will not form a $\sigma -$ bond because on taking x-axis as internuclear axis $2{{p}_{y}}$ and $2{{p}_{y}}$ orbitals overlap sideway (lateral overlapping) resulting in the formation of a $\pi -$ bond.