Fajan’s Rule, i.e. Covalent Character of Ionic Bond :- What is Theory of Fajan’s Rule? :- What is Postulates of Fajan’s Rule? :- What is Postulates of Fajan’s Rule in Size of the Ion? :- What is Postulates of Fajan’s Rule in Electronic Configuration? :- What is Postulates of Fajan’s Rule in Charge of Cation?