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  4. The oxidation state of central atom in the complex [ Co ( NH 3)4 ClNO 2] is

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Q. The oxidation state of central atom in the complex $\left[ Co \left( NH _{3}\right)_{4} ClNO _{2}\right]$ is

Coordination Compounds

Solution:

Let the oxidation state of $Co$ be $x$.

$\left[ Co \left( NH _{3}\right)_{4} ClNO _{2}\right]: x+4 \times 0+1 \times(-1)+1 \times(-1)=0$

$x-2=0 \Rightarrow x=+2$