Which of the following represents a compound? c20 h2o o2 h2

Option (b) is the correct answer.

Explanation:

A compound is defined as a substance that has two or more number of different atoms which are chemically combined to each other in a fixed ratio by mass.

For example, contains two atoms of hydrogen and one atom of oxygen which are chemically combined together in 2:1 ratio. Therefore, it is a compound.

On the other hand, if a substance contains only atoms of one type of element then it is known as a molecule.

For example, , , and are all molecules.

Thus, we can conclude that out of the given options represents a compound.

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