What is correct order of decreasing ionic character? PbCl2(.I.);PbF2(.II.);PbI2(.III.);PbBr2(.IV.)

Question

What is correct order of decreasing ionic character? PbCl2(.I.);PbF2(.II.);PbI2(.III.);PbBr2(.IV.) (A) III > IV > I > II (B) I > II > III > IV (C) III > I > IV > II (D) II > I > IV > III

Tardigrade Admin · Accepted Answer

According to Fajan's rule, as the size of anion increases, covalent character also increases and ionic nature decreases so the correct order is PbF2(.II.)>PbCl2(.I.)>PbBr2(.IV.)>PbI2(.III.)

Q. What is correct order of decreasing ionic character?
$P b C l_{2} (I); P b F_{2} (II); P b I_{2} (III); P b B r_{2} (I V)$

III > IV > I > II

I > II > III > IV

III > I > IV > II

II > I > IV > III

According to Fajan's rule, as the size of anion increases, covalent character also increases and ionic nature decreases so the correct order is
$P b F_{2} (II) > P b C l_{2} (I) > P b B r_{2} (I V) > P b I_{2} (III)$

Q. What is correct order of decreasing ionic character? PbCl2​(I);PbF2​(II);PbI2​(III);PbBr2​(IV)