Gujarat BoardEnglish MediumSTD 9ScienceAtoms and Molecules1 Mark
Question
Give a brief description of the following: Atomic mass unit.
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Answer
An atomic mass unit is defined as accurately $1/12$ the mass of a carbon$-12$ atom. The carbon$-12$ atom has six neutrons and six protons in its nucleus. It is represented as $a.m.u$ or $u$ (unified). It is a unit of mass used to express atomic masses.
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