Explain the formation of Ionic Bond with a suitable example.

Explanation

Formation of ionic bond : Electrostatic forces of attraction in between a cation and an anion.formed by the transfer of electrons iş.called Ionic bond.
Orbital concept of bonding :
The method of formation of ionic bond in sodium chloride.can be shown by the following orbital model :
Electronic configurations are:
`Na {Z= 11) 1s^2 2s^2 2p^6 3s^1`, `Cl (Z = 17) 1s^2 2s^2 2p^6 3s^2 3p^5`

In the formation of sodium chloride, the 3s electron of Na atom is transferred to the half-filled 3p orbital of Cl atom. It gets paired up with it.

The `Na^+` and `Cl^(-)` ions thus formed will have the inert. gas configurations of neon and argon respectively.
`Na^(+)+Cl^(-) rarr Na^(+)Cl^(-)`