Question

Identify the element which can have highest oxidation number.

• A. $Cl$
• B. $O$
• C. $C$
• D. $N$

Answer 1

Answer: (A)

$Cl$ can exhibit a maximum of $+7$ oxidation state.
For example. Oxidation number of $Cl$ in $HCl{O}_4$ is $+7$.