JEE MAIN - Chemistry (2011 - No. 26)

Among the following the maximum covalent character is shown by the compound :
SnCl2
AlCl3
MgCl2
FeCl2

Explanation

Charge of cation/Size of cation is called polarising power.

$$ \therefore $$ (i) Polarising power $$ \propto $$ charge of cation

(ii) Polarising power $$ \propto $$
1
size of cation


Here the AlCl3 is satisfying the above two conditions i.e., Al is in +3 oxidation state and also has small size. So it has more covalent character.

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