Question

Amongst the following, identify the species with an atom in +6 oxidation state :

• A. $Mn{O}_4^{-}$
• B. $Cr{\left(CN\right)}_6^{3-}$
• C. $Ni{F}_6^{2-}$
• D. $Cr{O}_2{Cl}_2$

Answer 1

The correct option is D $Cr{O}_2{Cl}_2$

Option (D) is correct.
$Cr$ in $Cr{O}_2{Cl}_2$ has + 6 oxidation state.
Oxidation state of $Mn{O}_4^{-}$ is + 7.
Oxidation state of $Cr{\left(CN\right)}_6^{3-}$ is + 3.
Oxidation state of $Ni{F}_6^{2-}$ is + 4.