Atomic Mass Constant

Atomic mass constant, represented as mu is 1 / 12 th of an unbound atom's mass of carbon-12 in its ground level and at rest. It can be defined as the ratio of the electron rest mass and the electron relative atomic mass. It is equal to 1 u (unified atomic mass unit). mu = m e / A r(e).

Constant Name

Atomic Mass Constant

Symbol : U

Unit : kg

Value : 1.660 538 921[73] e-27

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