Question

What is the differnece between $\sigma$ and $\pi$ bonds?

Answer 1

$\underset{–}{\sigma \text{bond}}:$

$a.$ The bond is formed by the axial overlap of the atomic orbitals.

$b.$ A strong bond is formed.

$c.$ All the $s-orbital$ and only one lobe of $p-orbital$ is involved.

$d.$ The electron cloud is symmetrical.

$e.$ Free rotation about $\sigma$ bond is possible.

$\underset{–}{\pi \text{bond}}:$

$a.$ The bond is formed by the sideways overlap of atomic orbitals.

$b.$ A weak bond is formed.

$c.$ $s-orbital$ do not take part, while both lobes of $p$ take part.

$d.$ The electron cloud is unsymmetrical.

$e.$ Free rotation of atom around $\pi$-bond is not possible.