Answer:
A compound is defined as a pure substance that is made up of two or more elements in a fixed ratio by mass.
A molecule is the smallest part of an element or a compound that can exist independently.
is a compound called Calcium sulphide. It is formed by the chemical combination of calcium and sulphur . It represents one molecule of the compound. Each molecule of this solid contains one atom of calcium combined with one atom of sulphur.
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