Atomic Weight -- from Eric Weisstein's World of Physics

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Modern Physics "> Particle Physics "> Particle Properties v

Units and Dimensional Analysis "> Units "> Units of Mass and Weight v

Atomic Weight

The average mass of the naturally occurring isotopes of an element, based on abundance and using the C = exactly 12 scale.

Atomic Mass, Atomic Mass Number, Atomic Number

© 1996-2007 Eric W. Weisstein