An element X froms the following oxides X2O, XO and XO2. This phenomenon illustrates the law of________?

Answer Details

The phenomenon illustrated in this question is the law of multiple proportion. According to this law, when two elements combine to form more than one compound, the different masses of one element that combine with a fixed mass of the other element are in the ratio of small whole numbers. In the given example, element X combines with oxygen to form three different oxides, and the ratios of the masses of X to oxygen in these oxides are in the ratio of small whole numbers (2:1, 1:1, and 1:2). This is consistent with the law of multiple proportion, which states that when two elements (in this case, X and oxygen) form more than one compound, the ratios of the masses of one element (X) that combine with a fixed mass of the other element (oxygen) are in the ratio of small whole numbers.