atomic mass (Q3840065)

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mass of an atom. Its unit is the unified atomic mass units (symbol: u, or Da). For atoms, the protons and neutrons of the nucleus account for almost all of the mass, and the atomic mass measured in u has nearly the same value as the mass number
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atomic mass
mass of an atom. Its unit is the unified atomic mass units (symbol: u, or Da). For atoms, the protons and neutrons of the nucleus account for almost all of the mass, and the atomic mass measured in u has nearly the same value as the mass number

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