Question

So why nitrogen can't form p-pi and d-pi bond

Answer 1

BECAUSE YOU'RE BEAUTIFUL ENOUGH

THAT I CAN SPAM

Answer 2

For ex: Nitrogen can not form p(pi) - d(pi) bond because of absence of d-orbitals in its valence shell. But Phosphorus, Arsenic etc can form p(pi) - d(pi) bonds. If we consider the bonding in case of SO2, S atom undergoes sp2 hybridisation. ... The vacant 3d-orbitals of S overlap with the filled 2p orbitals of O.