Question

Assuming $z-$axis inter nuclear axis. What molecular orbitals are formed by overlap of two $P_z$ atomic orbitals to form $\sigma$ bond?

Answer 1

The combination of $p_z$ and $p_z$ atomic orbitals gives bonding and antibonding molecular orbitals.

$\sigma 2p_z=$ bonding

${\sigma }^{\ast }2p_z=$ antibonding