Question

If two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element, are in whole number ratio. (a) Is this statement true? (b) If yes, according to which law? (c) Give one example related to this law

Define the law of multiple proportions. Explain it with two examples. How does this law point to the existence of atoms?

Element X forms five stable oxides with oxygen of formula X2O, XO, X2O3, X2O4 and X2O5. The formation of these oxides explains: