Topic summary
subscript
Extracted from the Wikipedia article Subscript and superscript.
Subscripts that are dropped below the baseline
Subscripts are used in chemical formulas. For example, the chemical formula for glucose is C6H12O6 (meaning that it is a molecule with 6 carbon atoms, 12 hydrogen atoms and 6 oxygen atoms). The chemical formula of the water molecule, H2O, indicates that it contains two hydrogen atoms and one oxygen atom.