Chemistry - Redox Reactions Question with Solution | TestHub

Out of the given outer electronic configuration of atoms, the highest oxidation state is achieved by $(n-1)d^{5}n{s}^2$ i.e. 7 A large number of oxidation state is due to the fact the $(n-1)d$ -electrons may get involved along with $ns$ electrons in bonding as electrons in $(n-1)d-$ orbitals are in an energy state comparable to $ns$ -electrons. Oxidation state of other options are as follows: