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Offline Rennhack

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Atomic mass number
« on: Nov 28, 2005, 09:06 »
The number of protons and neutrons in the nucleus of a nuclide.  (The atomic mass number is not the same as the chemical atomic weight, which is the average of all the naturally occurring isotopes of an element weighted according to their relative abundances.)
« Last Edit: Nov 28, 2005, 09:07 by Rennhack »


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