The standard unit (marked with symbol "u") which indicates the mass on the atomic or molecular scale. It is defined as one twelfth of the mass of neutral atom of carbon-12 in its nuclear and electronic ground state with a value of 1.660538921(73)
What is ATOMIC MASS UNIT?
ATOMIC MASS UNIT: "Correct symbol for the atomic mass unit is "u" and not "amu"."
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