The equivalent weight of a tetravalent element is 8, the relative vapour density of its oxide is

EW of tetravalent element = 8AW of tetravalent metal=4x8=32EW of Oxide ion = 8AW of Oxide of the element = 16Formula of the oxide of element = X+4O-2=XO2MW of the oxide of the element = 32 + 16(2)=64VD of the oxide of the element = 64/2 =32