Among the following the maximum covalent character is shown by the 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 C
$A l C l_{3}$

All have ${C l}^{-}$ as anions. So, no special effect from anion side.

The cation are ${F e}^{2 +}$ , ${S n}^{2 +}$ , ${A l}^{3 +}$ ,and ${M g}^{2 +}$

$ϕ_{F e}$ = $\frac{2}{r_{F e}}$ $ϕ_{S n}$ = $\frac{2}{r_{S n}}$ $ϕ_{A l}$ = $\frac{3}{r_{A l}}$ $ϕ_{M g}$ = $\frac{2}{r_{M g}}$

$r_{A l}$ is smallest and its charge is also high.Thus it has most polarizing power,

Thus, $A l C l_{3}$ is most covalent among given options.

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Similar questions

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

A) FeCl₂. B) SnCl_2.C) AlCl₃. D) MgCl_2.

Explain in detail.

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