A current of $10.0 \mathrm{A}$ flows for $2.00 \mathrm{h}$ through an electrolytic cell containing a molten salt of metal $\mathrm{X}$. This results in the decomposition of $0.250 \mathrm{mol}$ of metal $\mathrm{X}$ at the cathode. The oxidation state of $\mathrm{X}$ in the molten salt is:

$\left(\mathrm{F}=96,500 \mathrm{C}\right)$

• A

  $1+$
• B

  $4+$
• Correct answer
  C

  $3+$
• D

  $2+$

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