Bohr radius Guide, Meaning , Facts, Information and Description

In Bohr's model of the hydrogen atom, the Bohr radius () is the radius of the lowest energy orbit:

where:

is the permittivity of vacuum

is Dirac's constant or the "reduced Planck's constant"

is the electron rest mass

and

is the elementary charge

It has a value of 5.29189379×10^-11 m, about 53 picometers (or about half an angstrom).

The Bohr radius is often used as a unit in atomic physics, typically in perturbative expansions of wave function solutions.

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