Question

$1\text{amu}$ is equal to:

• A. $\frac{1}{{14}^{\text{th}}}$ the mass of one $O-16$ atom
• B. $\frac{1}{{12}^{\text{th}}}$ the mass of one $C-12$ atom
• C. $1\text{g}$ of $H_2$
• D. $1.66\times {10}^{-23}\text{kg}$

Answer 1

The correct option is B $\frac{1}{{12}^{\text{th}}}$ the mass of one $C-12$ atom

$1\text{amu}$ is $\frac{1}{{12}^{\text{th}}}$ of the mass of one carbon - 12 atom.