Question

Determine the oxidation state of the underlined element in $\underset{–}{I}Cl$.

• A. $+1$
• B. $+4$
• C. $+2$
• D. $+3$

Answer 1

The correct option is A $+1$

Let $x$ be the oxidation number of $I$ in $ICl$.
The oxidation numbers of Cl is $-1$.
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, $x-1=0$
$x=+1$
Hence, the oxidation number of $I$ in $ICl$ is $+1$.