How is a bond between Na and Cl different from a bond between C and O? What about a bond between N and N? Why are some bonds ionic and some covalent?

Respuesta :

The bond of Na and Cl results to the formation of a salt in which the bond present is ionic bond. The bond between C and O is covalent since the two elements involved are non-metals. The bond between N and N is also covalent and the molecule is non-polar. Ionic bonds occur in metals and non-metals