Avogadro's Number

The Avogadro constant is a constant equal to the number of constituent particles contained within one mole of substance.[1] It is approximately equal to 6.02214085×1023 mol−1.

A related term is Avogadro's number, a dimensionless constant equal to the number of atoms in a gram of hydrogen. The value of the Avogadro constant, when given in SI base units, is equal to the Avogadro constant.