Answer:
A. Sometimes the coefficient for the oxygen molecule is not a whole number
Explanation:
D is the answer your looking for
Answer:
B. The only planet to support life.
Explanation:
Noble gases' outer shells are already filled with 8 electrons (other than He, which has 2, but is still filled and stable). Atoms bond with other elements to fill their outer shell, but they don't need to do that and are already stable.