What are postulates of Fajan's Rule??
Answers
Postulates of Fajans’ Rule
The rule can be stated on the basis of 3 factors, which are :-
★ Size of the ion: Smaller the size of cation, the larger the size of the anion, greater is the covalent character of the ionic bond.
★ The charge of Cation: Greater the charge of cation, greater is the covalent character of the ionic bond.
★ Electronic configuration: For cations with same charge and size, the one, with (n-1)dn nso which is found in transition elements have greater covalent character than the cation with ns2 np6 electronic configuration, which is commonly found in alkali or alkaline earth metals.
some postulates of fajan' s rule are :-
it states about covalent characteranion between two element if charge of cation is grater the covalent character is grater but the anion must be smaller.
it says that the ionic with Electronic configuration (N - 1)dn ,(Transiton element between the periodic table) having same size and charges show grater covalent chaa ionicracter compared to cation ns2np6 electronic configuration .Mainly fo und in group 1 and group of modern periodic table .