Why did scientists choose Carbon as the base for Atomic Mass Unit (AMU) ????
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carbon 12 isotope is the important abundant isotope of carbon and it has an exact mass of 12 , while the other isotopes like oxygen have not the exact value of 16(it is 15.88) so the determination of the relative mass of other elements were not accurate and varied in scale.
But with carbon 12 isotope as standard the determination of relative atomic mas of rest elements were accurate.
But with carbon 12 isotope as standard the determination of relative atomic mas of rest elements were accurate.
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As this is the only isotope with exact round figure value of 12 others have their values in decimals that makes them inaccurate for the determination of relative atomic mass
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