JEE MAIN - Chemistry (2004 - No. 28)

Of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one of them?

$$\left( {n - 1} \right){d^3}n{s^2}$$

$$\left( {n - 1} \right){d^5}n{s^1}$$

$$\left( {n - 1} \right){d^8}n{s^2}$$

$$\left( {n - 1} \right){d^5}n{s^2}$$

$$\left( {n - 1} \right){d^5}n{s^2}\,\,$$ attains the maximum $$O.S.$$ of $$+7$$