Is Nitrogen Joined By A Double Covalent Bond?
Yes and no, it depends on what is nitrogen atom joined to, and in what compound. Nitrogen atom has 5 valence electrons and to achieve octet formation, it need another 3 more electrons. Hence, nitrogen would generally form 3 bonds. For example, in nitrogen gas, N2 the two nitrogen atoms are join by a triple (covalent) bond. In quinolizidines alkaloids, the nitrogen atom is singly bonded to three carbon atoms.