Question

Define atomic mass unit . why is it not a practical unit?

Answer 1

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✴️Mass exactly equal to 1/12 part of c-12 atom is called atomic mass unit.

✴️It is not a practical unit because it is not a derived unit.

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Answer 2

Answer:

a unit of mass used to express atomic and molecular weight equal to 12th of the mass of an atom of carbon - 12.

it has not a practical unit because it is not a derived unit.