| Ionic bond | Covalent bond |
| Formed by transfer of an electron from one atom to another | Formed by a sharing of electrons between two atoms |
| A compound has the high melting point | The compound has the low melting point |
| Here participating atoms have a high electronegativity difference | Here participating atoms have almost the same electronegativity. |
| Formation of ion is necessary | No cation-anion formation takes place |