Question

Oxidation number of each chlorine in $CaO{Cl}_2$ is $-1$.
If true enter 1, else enter 0.

• A. 0

Answer 1

The correct option is A 0
Let $x$ be the oxidation number of Cl in $CaO{Cl}_2$.
Since the overall
charge on the complex is $0$, the sum of oxidation states of all elements in
it should be equal to $0$.
Therefore, $+2+-2+2\left(x\right)=0$
or, $x=0$
Thus, the oxidation number of Cl in $CaO{Cl}_2$ is $0$.