NEET 2016 Physics and Chemistry Paper 2

Question : 20 of 90

Marks: +1, -0

Suppose the elements X and Y combine to form two compounds XY2 and X3Y2. When 0.1 mole of XY2 and XY2 weights 10 g and 0.05 mole of X3Y2 weights 9 g, the atomic weights of X and Y