Which has maximum polarising power in cation?

L i^{+}

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M g^{2 +}

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A l^{3 +}

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O^{2 -}

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Solution

The correct option is C $A l^{3 +}$
Polarising power depends upon size of cation and charge of cation so higher the charge of cation and lower the size of cation have higher polarising power. So, $A l^{+ 3}$ have highest polarising power.

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