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The lack of a number preceding the carbon symbol C and the compound formula CO2 shows that there is one carbon atom and one carbon dioxide molecule. Meaning of Subscript Numbers. Subscript numbers in chemical formulas represent the number of atoms or molecules immediately preceding the subscript.

In chemical formulas,  subscript numbers represent the number of atoms or molecules immediately preceding the subscript number.

Subscript Numbers:

In a chemical formula, subscript represent the ratio at which the atom bond with another atom to form compound.

For example - In Carbon dioxide molecule, the subscript number after oxygen represent that 2 Oxygen bond with one Carbon.

Therefore, subscript numbers means in chemical formulas represent the number of atoms or molecules immediately preceding the subscript number.

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