It is a covalent bond because they are sharing electrons between two non-metals.
N2 should be dinitrogen since the N is nitrogen and the 2 is for 2 of the Ns.
Cl4 (the second part of the compound) should be named like an ion and the prefix. for the prefix: tetra (since there are 4) and chlorIDE since we are naming it like an ion. So Cl4 becomes tetrachloride.
In the end, the compound should be named dinitrogen tetrachloride.
dinitrogen tetrachloride. it is composed of non-metals. Therefore, N2Cl4 is a covalent compound. The first nonmetal is named accordingly and uses all numerical prefixes besides mono. The other nonmetal has its base name but has its ending that is changed to –ide. It will as well use any of the numerical prefixes.