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Question

Atomic mass of carbon is ____ u.
  1. 12
  2. 6
  3. 4
  4. 8


Solution

The correct option is A 12
Atomic mass of an element refers to the total mass of protons and neutrons in the nucleus of its atom. It is expressed as unified atomic mass unit or u.
Carbon has six protons and six neutrons in its nucleus because of which it has an atomic mass of 12 u.

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