Bohr radius (Q652571)

physical constant; the most probable distance between an electron and the nucleus in a nonrelativistic model of the hydrogen atom with infinitely heavy nucleus

Language	Label	Description	Also known as
English	Bohr radius	physical constant; the most probable distance between an electron and the nucleus in a nonrelativistic model of the hydrogen atom with infinitely heavy nucleus

Statements

instance of

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{\mathsf {L}}

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unit symbol

a₀ (English)

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numeric value

0.052917721067±0.000000000012 nanometre

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reference URL

http://physics.nist.gov/cgi-bin/cuu/Value?bohrrada0

retrieved

6 November 2015

stated in

Committee on Data for Science and Technology

0.0000000000529177210903±0.000000000000000000008 metre

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stated in

2018 CODATA recommended values

defining formula

a_{0}={\frac {4\pi \varepsilon _{0}\hbar ^{2}}{m_{\mathrm {e} }e^{2}}}

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stated in

ISO 80000-10:2019 Quantities and units — Part 10: Atomic and nuclear physics

section, verse, paragraph, or clause

10-6

in defining formula

a_{0}

symbol represents

Bohr radius

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\pi

symbol represents

pi

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\varepsilon _{0}

symbol represents

permittivity of vacuum

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\hbar

symbol represents

reduced Planck constant

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m_{\mathrm {e} }

symbol represents

electron mass

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e

symbol represents

elementary charge

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conversion to SI unit

0.0000000000529177 metre

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quantity symbol (LaTeX)

a_{0}

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described by source

ISO 80000-10:2019 Quantities and units — Part 10: Atomic and nuclear physics

section, verse, paragraph, or clause

10-6

subject named as

Bohr radius

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measured physical quantity

length

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recommended unit of measurement

metre

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stated in

ISO 80000-10:2019 Quantities and units — Part 10: Atomic and nuclear physics

section, verse, paragraph, or clause

10-6

ångström

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stated in

ISO 80000-10:2019 Quantities and units — Part 10: Atomic and nuclear physics

section, verse, paragraph, or clause

10-6

Wikidata SPARQL query equivalent

wd:Q652571 p:P2370/psn:P2370 [wikibase:quantityAmount ?source; wikibase:quantityUnit ?base]. ?item p:P2370/psn:P2370 [wikibase:quantityAmount ?target; wikibase:quantityUnit ?base]. BIND(?source / ?target as ?value)

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