Question

1.Two elements sometimes can form more than one compound.​

Answer 1

Answer:

When 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. This is the law of multiple proportions.

Consider two elements C and O. They combine to form CO and CO 2.The masses of oxygen that combine with 12 g of carbon to form CO and CO2 are 16 g and 32 g respectively. They are in whole number ratio 1:2