Chemistry - CHEMICAL BONDING Question with Solution | TestHub

Sigma bonding involves end to end overlapping of the two atomic orbitals e.g. between $s$ and $s,s$ and $p$ and $p$ and $p$ orbitals. Pi bonding $(\pi )$ involves sidewise overlapping of the two atomic orbitals e.g. between $p$ and $p$ orbitals. Overlapping of orbitals is more effective in $\sigma$ bonding than in $\pi$-bonding. Due to the geometry of overlapping or orbitals, rotation of one atom is not
possible around $\pi$-bonds.