Answer:
The answer is: B. A compound does not always have to contain the same number of atoms of each element.
Step-by-step explanation:
In chemistry, a chemical compound is a substance formed by the chemical combination of two or more different elements of the periodic table.
The compounds are represented by a chemical formula. For example, water (H2O) consists of two atoms of hydrogen and one of oxygen.
The answer is: B. A compound does not always have to contain the same number of atoms of each element.