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Nuclei — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsNuclei1 Mark
Question
Modern atomic mass scale is based on the mass of:
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Answer

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 $1.6605\times 10^{−19}g$.
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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