Question

7. Although carbon's three isotopes are carbon-12, carbon-13, and carbon-14, its

average atomic mass is 12.01 because

A. carbon-12 is the heaviest isotope.

B. carbon-12 is most useful to humans.

C. carbon-12 is the most common isotope.

Answer 1

B

Step-by-step explanation:

carbon 12 is most useful to humans