Mon November 28, 2011 By:

What does atomic mass actually mean

Expert Reply
Tue November 29, 2011
The atomic mass is defined as the mass of an atom, which can only be one isotope at a time.
The atomic mass (ma) is the mass of a specific isotope, most often expressed in unified atomic mass units.It isthe total mass of the protons, neutrons, and electrons in a single atom when it is at rest
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