What is the difference between covalent and iconic bonding's

Quick Answer In an ionic bond, an electron leaves one atom to join another, while a covalent bond is a sharing of electrons between two atoms. Polar covalent bonds occur when two atoms share an uneven number of electrons.

These two opposite ions attract each other and form the ionic bond. Covalent bonding is a form of chemical bonding between two non metallic atoms which is characterized by the sharing of pairs of electrons between atoms and other covalent bonds.