atomic mass
Plural
atomic masses
1
the weighted average mass of an atom of an element, taking into account the masses of all its naturally occurring isotopes
- The atomic mass of carbon is approximately 12.01 because it averages the masses of carbon-12 and carbon-13 isotopes.
- Hydrogen has an atomic mass of about 1.01, reflecting the presence of both protium and deuterium isotopes.
- The periodic table lists the atomic mass of oxygen as 16.00, considering its common isotopes.
- Chlorine's atomic mass is roughly 35.45, influenced by its two major isotopes, chlorine-35 and chlorine-37.
- The atomic mass of uranium is approximately 238.03, accounting for its isotopes uranium-235 and uranium-238.
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