We know that, q=it, where q is the charge in coulomb, i is the current in amperes and t is the time in seconds. q=it 10h‌=q=10.7A×10h×60‌min‌h−1×60smin−1 ‌=3,85,200C Since, 96500C=1 mole of electrons ∴3,85200C=4 moles of electrons Since, 4 moles of electrons are needed to deposit 1 mole of metal, therefore the charge on metal ion is +4. That is, its valency is 4 . Equivalent weight =
