Question

what do you mean by atomic mass unit?​

Answer 1

Answer:

An atomic mass unit is defined as a mass equal to one twelfth the mass of an atom of carbon-12. The mass of any isotope of any element is expressed in relation to the carbon-12 standard. For example, one atom of helium-4 has a mass of 4.0026 amu.

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Answer 2

Answer:

꧁An atomic unit of mass 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. The atomic unit mass is symbolized as AMU or amu.

Explanation:

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1 AMU = Average of the proton rest mass and the neutron rest mass.

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1 AMU = 1.67377 x 10 -²⁷ kilogram or 1.67377 x 10 -²⁴ gram.꧂