Step-by-step explanation:
An ionic bond is a bond formed by transfer of electrons from one atom to another.
For example, sodium is electron rich as it has only one valence electron and in order to attain stability it readily loses one electron. Whereas chlorine being a non-metal is electron deficient in nature. It needs only one electron to attain stability.
Therefore, Cl atom readily combines with Na atom to form NaCl.
Hence, we can conclude that electron deficient atoms will most likely accept electrons in order to form ionic bonds.