Avogadro's number

== English == === Etymology === Named after Italian physicist Amedeo Avogadro (1776–1856). === Proper noun === Avogadro's number (physical chemistry) The number of elementary entities (atoms or molecules) comprising one mole of a given substance, being precisely 6.02214076 × 1023. Formerly defined as the number of atoms present in 12 grams of isotopically pure carbon-12. Synonyms: Avogadro constant, Avogadro's constant ==== Translations ==== ==== Further reading ==== Avogadro constant on Wikipedia.Wikipedia