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  4. The valency of Cr in the complex [Cr(H2O)4Cl2)+ is

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Q. The valency of Cr in the complex $[Cr(H_2O)_4Cl_2)^+$ is

Coordination Compounds

Solution:

Let O.S. of Cr in $[Cr(H_2O)_4Cl_2)^+$ is $x$
O S. of $H_2O$ = 0, O.S. of Cl = -1
$\therefore \, x$ + 4 $\times$ 0 +2(- 1) = + 1
$x$ = +3