Ionic or Electrovalent Bond:-      

1. Formation of sodium chloride =>     
2. Formation of CaF₂ (Calcium fluoride )
3. Ca S    =>           
4. Na₂ S   =>

The Number of electrons cost or gained during formation of tonic bond is known as electrovaleney.

Factors Affecting formation of Ionic bond=>

1. Ionization Energy=> smaller the I.E. more easily electron is lost and higher will be case os formation of ionic bond. Eg- Alkali metels
2. Electron gain Enthalpy (EGE)=> more -ve is EFE higher is case of formation of anion and more easily ionic bond is formed e.g. Halogens.
3. Lattice Energy=> It’s the energy released when I mole of ionic Compd.  Is produced from its constituents ions is the gaseous state.

- Higher the lattice Energy stronger is ions bond.

-Higher the charger present on ions ↑ is L.E.

- Smaller the Inter nuclear distance, ↑ is L.E.

The Number of electrons cost or gained during formation of tonic bond is known as electrovaleney.

Factors Affecting formation of Ionic bond=>

1. Ionization Energy=> smaller the I.E. more easily electron is lost and higher will be case os formation of ionic bond. Eg- Alkali metels
2. Electron gain Enthalpy (EGE)=> more -ve is EFE higher is case of formation of anion and more easily ionic bond is formed e.g. Halogens.
3. Lattice Energy=> It’s the energy released when I mole of ionic Compd.  Is produced from its constituents ions is the gaseous state.

- Higher the lattice Energy stronger is ions bond.

-Higher the charger present on ions greater is L.E.

- Smaller the Inter nuclear distance, greater  is L.E.

Questions=> What is shape of LaF₂

  Ans:-- No shape ∵ Ionic bond is non-directional.

- Out of NaCl and Mgo, Mgo has greater  L.E. greater  Charges.