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Last updated at Dec. 16, 2024 by Teachoo
Answer
According to Dalton, each element had a characteristic mass called atomic mass
It is denoted by amu (atomic mass unit) or simply u .
The SI unit of atomic mass is u (unified mass)
One atomic mass unit (1u) is a mass unit equal to exactly one-twelfth (1/12th) the mass of one atom of carbon-12 isotope.
1u = 1/12th mass of an Carbon-12 isotope = 1.67377 x 10 -27 kilogram
