Question

a metal forms two oxides. the higher oxide contains 80% metal. 0.72g of lower oxide gave 0.8g of higher oxide when oxidized. then the ratio of the weight of oxygen that combines with the fixed weight of the metal is the two oxides will be
1) 2:3
2)1:2
3) 4:5
4)3:2

Answer 1

Oxidation means the loss of electrons in metal atoms. The oxidation of a metal occurs when the metal loses one or more electrons