Nitrogen is restricted to a maximum covalency of 4 since only four (one s and three p) orbitals are available for bonding.can anyone please explain regarding only 4 orbitals

Nitrogen is restricted to a maximum covalency of 4 since only four

1.	Nitrogen is restricted to a maximum covalency of 4 since only four (one s and three p) orbitals are available for bonding.can anyone please explain regarding only 4 orbitals
Answer» NITROGEN does not have vacant d-orbital to exceed its covalency beyond 4 and HENCE have only 4 orbitals available for bonding. WHEREAS HEAVIER elements have vacant d-orbitals which can be used for bonding and hence expand their covalence as in PF6 P=3s2 3p3 OVERALL it does not possess d orbital...hope it helps you