Phosphorus can form 5 bonds like in the case of phosphate. While nitrogen is known to make a maximum of 4 bonds (3 covalent, 1 dative covalent). But why is this so?
Is it because nitrogen doesn't have available d orbitals while phosphorus has available d orbitals? Or does the presence of d orbitals have nothing to do with this and it's the sizes of both atoms that allows them to make more bonds?