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IEVref: | 113-02-18 | ID: | |

Language: | en | Status: Standard | |

Term: | Avogadro number | ||

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Symbol: | N_{0}
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Definition: | conventional number equal to the numerical value 6,022 140 76 × 10^{23} of the Avogadro constant expressed in reciprocal mole
Note 1 to entry: The Avogadro number is chosen such that the molar mass of carbon 12 is 0,012 kg/mol with a relative standard uncertainty of 4,5 × 10 Note 2 to entry: Sometimes the synonym “Loschmidt number” is used, denoted by the symbol “ | ||

Publication date: | 2020-12 | ||

Source: | SI Brochure, 9th edition, 2019, Appendix 1, modified – The definition in the SI Brochure has been revised to comply with the IEV rules. The synonym "Loschmidt number" and the symbol "<i>L</i>" have been added to Note 2 to entry. | ||

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Note 1 to entry: The Avogadro number is chosen such that the molar mass of carbon 12 is 0,012 kg/mol with a relative standard uncertainty of 4,5 × 10^{−10}.

Note 2 to entry: Sometimes the synonym “Loschmidt number” is used, denoted by the symbol “*L*”.