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atomic mass
The average mass of an atom of a given element. For elements with only one isotope, this mass is the same as the mass of each atom. However, for elements with more than one isotope, the atomic mass is the average mass for all the isotopes of the element.
Related entries
• atomic mass unit
• mass number
Related categories
• ATOMIC AND NUCLEAR PHYSICS
• PHYSICAL CHEMISTRY
• PARTICLE PHYSICS
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