A specimen of element Q has two isotopes. The diagram gives the relative abundances and relative masses for these isotopes. What is the relative atomic mass, $A_r$, of this Q sample?
- A21.0
- B21.2
- C21.5
- D21.7
Chemistry 5070 · O Level · Isotopes
Chemistry 5070 · O Level · Isotopes
A specimen of element Q has two isotopes. The diagram gives the relative abundances and relative masses for these isotopes. What is the relative atomic mass, $A_r$, of this Q sample?