Define the atomic mass unit.

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Sujoy Das

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An atomic mass unit is defined as 1/12th of mass of an atom of carbon-12. This is approximately 1.67 ×10^-27 kilograms.
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An atomic mass unit is defined as 1/12th of mass of an atom of carbon-12
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It is the mass exactly equal to the 1/12 th the mass of one carbon-12 atom.
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It is used to discribe the mass of an atom. 1Amu= 1.66 × 10^(-24)g
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1/12 of the mass of single atom of Carbon 12. Earlier it was Al described as 1/16 of single Oxygen atom or 1/1 of one H atom but now the carbon is taken as standard
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An atomic mass unit is defined as 1/12th of mass of an atom of carbon-12. This is approximately 1.67 ×10^-27 kilograms.
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