Which of the following shows maximum number of oxidation states?

• A

  $\mathrm{Cr}$
• B

  $\mathrm{Fe}$
• Correct answer
  C

  $\mathrm{Mn}$
• D

  $\mathrm{V}$

Solution

$\mathrm{Mn}$ is in group seven shows a maximum oxidation state of +7 in $\mathrm{KMnO}_4$ Each of the element in group III B to VII B can show the maximum oxidation state equal to its group number.

Hence, the correct answer is option: 'C'.