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Why SnCl(2) is more ionic than SnCl(4) ?...

Why `SnCl_(2)` is more ionic than `SnCl_(4)` ?

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The size of `Sn^(4+) ` in `SnCl_(4)` is smaller than `Sn^(2+) ` in `SnCl_(2).` Hence, polarization or distoration is more in `SnCl_(4)` than `SnCl_(2).` So it is more covalent or less ionic in nature than `SnCl_(2).`
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