Subscript

A small number written after and below an element symbol that shows how many atoms of that element occur in the formula.

A small number within a chemical formula that shows how many atoms of the preceding element are present in one molecule or formula unit.

A small number written after and below an element symbol or bracket, showing how many of those atoms or groups are present.

A small number written at the lower right of a symbol or bracket to show how many of the preceding atoms or groups are present.

A small number within a chemical formula showing how many atoms of an element are present in one particle or formula unit.

A small number within a chemical formula that states how many atoms of the preceding element are present in one particle or formula unit.

A small number written after and below an element symbol that shows the relative number of its atoms in a formula; a subscript of 1 is omitted.

A small number written below the line in a chemical formula, showing how many atoms of an element, or how many bracketed groups, are present.

A small number written after a chemical symbol to show how many atoms of that element are present in a molecule, or its ratio in a formula.

A small number written at the lower right of a chemical symbol to show how many atoms of that element are present.

A small number within a chemical formula that shows how many atoms of the element immediately before it are present.

A small number within a chemical formula showing how many atoms of the preceding element are present in one particle or formula unit.