MCQ
Modern atomic mass scale is based on the mass of:
- AH−1
- BC−12
- CC−14
- DC−16
✓
Answer
- C−12
Explanation:
Modern atomic weight scale is based on C−12.
The standard unit for expressing the mass of atom is amu (atomic mass unit).
It is equal to $\frac{1}{12}$ of the mass of an atom of carbon-12 equal to 1.6605×10−19g.
amu is also called as avogram.
Avogram is a unit of mass and weight equal to one gram divided by the Avogadro's number.
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