Question

In a compound, the constituent elements are always present in a definite proportion by________.

Answer 1

In compound constituent elements are always present in a definite proportion by fixed ratio.

Two or more elements combine to form compound. A compound is a substance formed when two or more chemical elements are chemically bonded together. Two types of chemical bonds common in compounds are covalent and ionic bonds. The elements combine together in fixed ratio e.g. in water, hydrogen and oxygen elements are present in the ratio of 2:1.