The equivalent weight of an element is 4. Its chloride has a vapour density 59.25. Then the valency of the element is

Vapour density of chloride = 59.25Molar mass of chloride = 59.25 x 2= 118.5If formula is MClnM+(n×35.5)=118.5xn+35.5n=118.5   [as eq. wt xn=M4 n+35.5 n=118.5        39.5 n=118.5               n =3Formula is MCl3 or valency of M is 3.