Bohr radius

https://doi.org/10.1351/goldbook.B00693
Atomic fundamental physical constant used as atomic unit of length: a0=4 π ε0 ℏ2me e2=5.291 772 49 (24)×10−11 m where e is the elementary charge, ℏ is the Planck constant divided by 2 π and me is the electron rest mass.
Source:
CODATA Bull. 1986, 63, 1 [Terms] [Book]
Citation: 'Bohr radius' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.B00693 RIS BibTex EndNote
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Last revised: February 24, 2014