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

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 2px  (C)  2py and 2py  (D) 1s and 2s

Tardigrade Admin · Accepted Answer

2py and 2py will not form a σ - bond because on taking x-axis as internuclear axis 2py and 2py orbitals overlap sideway (lateral overlapping) resulting in the formation of a π - bond.

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

$1 s$ and $1 s$

$1 s$ and $2 p_{x}$

$2 p_{y}$ and $2 p_{y}$

$1 s$ and $2 s$

$2 p_{y}$ and $2 p_{y}$ will not form a $σ -$ 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 $π -$ bond.

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

1s and 1s

1s and 2px​

2py​ and 2py​

1s and 2s