O-18, an isotope of oxygen, has a stable nucleus. O-19, another isotope of oxygen, does not have a?

Question

...  stable nucleus. Based on this information, which statement is correct?

Answer

General info:  en.wikipedia.org/wiki/Isotopes_of_oxygen

Stable means not radioactive, but unstable does not always mean radioactive. So the only thing you know from the given info is that  O-18 is not radioactive.

O-18, an isotope of oxygen, has a stable nucleus. O-19, another isotope of oxygen, does not have a?

Answers (1)