Question

Why do we use carbon 12 is used in mole concept

Answer 1

Explanation:

Atoms generally have non null mass deficit which makes their atomic mass non exact. This is not the case with carbon. Carbon has a mass deficit zero. Thus, the atomic mass of carbon 12 isotope is exactly 12 and hence it is used in the definition of mole.

Answer 2

Answer:

Carbon-12 is the standard while measuring the atomic masses. Because no other nuclides other than carbon-12 have exactly whole-number masses in this scale.08-Feb-2012