Among the following, the maximum covalent character is shown by which compound?

F e C l_{2}

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S n C l_{2}

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A l C l_{3}

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M g C l_{2}

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Solution

The correct option is A $A l C l_{3}$
As the cation charge increases, the covalent character also increases.

According to Fajans rule, cation with greater charge and smaller size favour covalency.

All the central metals have $+ 2$ oxidation except for $A l$ which has $+ 3$ oxidation state.

Hence, $A l$ shows more covalent character as compared to others.

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Among the following the maximum covalent character is shown by the compound _____

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(L) : [C o (N H_{3})_{6}] C l_{3}

(M) : N a_{3} [C o (o x a l a t e)_{3}]

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(P) : [Z n (H_{2} O)_{6}] (N O_{3})_{2}

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