Ionic
calcium nitride is ionic.
Lead nitride is an ionic compound.
ionic
Strontium nitride is an ionic compound.
Lead nitride is a covalent bond.
Beryllium nitride has an ionic bond.
Aluminium nitride: AlN
No, it is ionic
it is an ionic compound
It is an ion
Fe3N2 is ferric nitride, and it is ionic, not covalent.