which best describes a radioactive isotope?\no an atom is unstable.\no an atom is stable.\no there is only…
which best describes a radioactive isotope?\no an atom is unstable.\no an atom is stable.\no there is only one other isotope.\no there are many isotopes.
Answer
Brief Explanations:
A radioactive isotope has an unstable nucleus. Unstable nuclei undergo radioactive decay to become more stable. Stable atoms do not exhibit radioactivity. The number of other isotopes is not related to the definition of a radioactive isotope.
Answer:
An atom is unstable.