15 all isotopes with atomic numbers over 84 are _. a nonmetals b radioactive c always stable d metalloids
15 all isotopes with atomic numbers over 84 are _. a nonmetals b radioactive c always stable d metalloids
Answer
Brief Explanations:
In nature, all isotopes with atomic numbers greater than 84 are radioactive. This is due to the fact that the strong - force binding the nucleus together cannot overcome the electrostatic repulsion between protons in larger nuclei.
Answer:
B. radioactive