an isotope of what element is used as the standard for the atomic mass unit?\na carbon\nb helium\nc…
an isotope of what element is used as the standard for the atomic mass unit?\na carbon\nb helium\nc oxygen\nd hydrogen
Answer
Brief Explanations:
The isotope of carbon - 12 is used as the standard for the atomic mass unit. One atomic mass unit is defined as $\frac{1}{12}$ of the mass of a carbon - 12 atom.
Answer:
A. carbon