The charge/size ratio of a cation determines its polarizing power. Which one of the following sequences represents the increasing order of the polarizing power of the cationic species,
As we learnt in
Fajans Rules -
It accounts for the covalent character in ionic compounds covalency is favoured by
1. Small cation
2. Large anion and
3. Large charge on either ion
-
High charge and small size of the cations increases polarisation.
As the size of given cations decreases, polarisation power of cation increases. In order of polarisation power is
Option 1)
This option is incorrect
Option 2)
This option is incorrect
Option 3)
This option is incorrect
Option 4)
This option is correct
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