A current of 10.0 A flows for 2.00 h through an electrolytic cell containing a molten salt of metal X . This results in the decomposition of 0.250 mol of metal X at the cathode . The oxidation state of X in the molten salt is : (F=96,500 C)

Question

$(a)\;1+\qquad(b)\;2+\qquad(c)\;3+\qquad(d)\;4+$