Question

Define 1 AMU



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Answer 1

An atomic unit of mass is defined as accurately 1/12 the mass of a carbon-12 atom . The carbon 12 atom has 6 neutrons and 6 protons in its nucleus . The atomic unit mass is symbolised as AMU or amu .

1 amu = 1.67377 × 10 raise to the power -27 kilogram or gram .

Answer 2

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• The convension was changed and 1 amu was defined as one twelveth of the mass of one carbon - 12 atom.

★ Atomic mass unit is also called unified mass and denoted by letter 'u'.