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  4. The oxidation state and covalency of Al in [AlCl(H2O )5]2+ respectively are

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Q. The oxidation state and covalency of $Al$ in $[AlCl(H_2O )_5]^{2+}$ respectively are

Classification of Elements and Periodicity in Properties

Solution:

Let oxidation state of $Al = x$
$[AlCl(H_2O)_5]^{2+} = x - 1 + 5 \times 0 = + 2$
$\Rightarrow x = + 3$
It is a complex compound in which covalency of $Al$ is $6$.