Avogadro constant

The Avogadro constant ($N_{A}$) in Le Système international d'unités is given by:

N_A = 6.02214179(30) x 10²³ mol^-1

It is named after Lorenzo Romano Amedeo Carlo Avogadro by Jean Perrin in 1909 (Ref. 3).

Interesting reading

• Ronald Newburgh, Joseph Peidle and Wolfgang Rueckner "Einstein, Perrin, and the reality of atoms: 1905 revisited", American Journal of Physics 74 pp. 478-481 (2006)

References

1. CODATA
2. G. Mana and G. Zosi "The Avogadro constant", La Rivista del Nuovo Cimento 18 pp. 1-23 (1995)
3. Jean Perrin "Mouvement brownien et réalité moléculaire", Annales de chimie et de physique XVIII (8e série) pp. 5-113 (1909) Page images on Gallica