The element that can form multiple bonds with itself from the following is

Among the given group-15 elements, nitrogen can form multiple bonds with itself. A strong multiple bonds are formed only when the overlapping is effective. i.e. overlapping orbitals are of similar energy and same symmetry. Nitrogen has small size and has $2 p$ orbitals (lower energy), shows $p \pi-p \pi$ bonding. Whereas, in the heavier elements the overlapping orbitals are bigger and are very high in energy as atomic size increases down the group. Thus, in these cases, effective overlapping for $p \pi-p \pi$ bond, does not takes place.