11 / 125

10-6

Bohr radius

URNurn:iso:std:iso:80000:-10:ed-2:en:item:10-6

https://metanorma.github.io/isq-smart/quantities/part-10/t10-6
urn:iso:std:iso:80000:-10:ed-2:en:item:10-6

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-10:ed-2:en:item:10-6

IEC

urn:iec:std:iec:80000-10:2019:::item:10-6

Designations

ENBohr radius

FRrayon de Bohr

Symbol

a_{0}

Notation systems

Rendered

a_{0}

AsciiMath

a_0

LaTeX

a_{0}

Definition

radius (ISO 80000-3: Space and time) of the electron orbital in the hydrogen atom in its ground state in the Bohr model of the atom:

a_{0} = \frac{4 π ε_{0} {P{hbar}}^{2}}{m_{e} e^{2}}

where

$ε_{0}$ :: is the electric constant (IEC 80000-6: Electromagnetism),

$P{hbar}$ :: is the reduced Planck constant (ISO 80000-1),

$m_{e}$ :: is the rest mass (rest mass) of electron, and

$e$ :: is the elementary charge (ISO 80000-1)

rayon (ISO 80000-3: Space and time) de l'orbitale électronique dans l'atome d'hydrogène dans son état fondamental dans le modèle de Bohr de l'atome:

a_{0} = \frac{4 π ε_{0} {P{hbar}}^{2}}{m_{e} e^{2}}

où

$ε_{0}$ :: est la constante électrique (IEC 80000-6: Electromagnetism),

$P{hbar}$ :: est la constante de Planck réduite (ISO 80000-1),

$m_{e}$ :: est la masse au repos (rest mass) de l'électron, et

$e$ :: est la charge élémentaire (ISO 80000-1)

Units

m

metre

View related quantities →

A r \in g

angstrom

View related quantities →

Notes

The radius of the electron orbital in the $H$ atom in its ground state is $a_{0}$ in the Bohr model of the atom.

ångström ( $unitsml(Aring)$ ), $1 unitsml(Aring) : = 10^{- 10} unitsml(m)$

Le rayon de l'orbitale électronique dans l'atome $H$ dans son état fondamental est $a_{0}$ dans le modèle de Bohr de l'atome.

ångström ( $unitsml(Aring)$ ), $1 unitsml(Aring) : = 10^{- 10} unitsml(m)$

Referenced by

Rydberg constant Hartree energy

Concept HierarchyPendrill (2024)

Llength-type quantitiesLevel 0 · Kind

Broader concepts

◇ length-type quantities

Characterizes

● atom● electron

Ontology
isq:Quantity smart:TermEntry

Class Hierarchy

smart:Entity smart:TermEntryisq:Quantity

A physical quantity as defined in ISO/IEC 80000, with associated symbols, definitions, and units of measurement.

Instance IRI

isq:t10-6

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	10-6
skosxl:prefLabel	"Bohr radius"@en
skosxl:altLabel	"a_0"@en
skos:definition	radius (<<iso80000-3>>) of the electron orbital in the hydrogen atom in its ground state in the Bohr model of the atom: …
skos:note	The radius of the electron orbital in the stem:["H"] atom in its ground state is stem:[a_0] in the Bohr model of the ato…
isq:hasUnit	m (metre)Aring (angstrom)
isq:hasDimension	isq:Dimension
smart:hasBindingnessType	bindingness-type:normative
dcterms:isPartOf	isq:part-10

Related Entities

isq:QuantityShape isq:part-10 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry