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Avogadro's Number Definition

Chemistry Glossary Definition of Avogadro's Number

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Avogadro's number is named in honor of Amedeo Avogadro.

Avogadro's number is named in honor of Amedeo Avogadro.

Definition: Avogadro's number is the number of particles found in one mole of a substance. It is the number of atoms in exactly 12 grams of carbon-12. This experimentally determined value is approximately 6.022 x 1023 particles per mole.

Also Known As: Avogadro's constant

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