Question

1. Define the atomic mass unit.
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Answer 1

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•ATOMIC MASS UNIT:-

A unit of mass used to express atomic and molecular weights ,equal to one twelfth of the mass of an atom of CARBON-12 (C-12).

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Answer 2

Atomic mass unit is defined as the mass unit equal to exactly one-twelfth (1/12th) of the mass of one atom of carbon-12. It is denoted by u (unified mass).

$i.e. \: \: \: \: 1 \: amu \: (or \: u) = 1.66056 \times 10 {}^{ - 24} g$