How do radioactive isotopes differ from isotopes?
A. Radioactive isotopes have more neutrons than do isotopes.
B. Radioactive isotopes are stable; isotopes are unstable.
C. Radioactive isotopes have fewer neutrons than do isotopes.
D. Radioactive isotopes are unstable; isotopes are stable.
Answer:D
How do radioactive isotopes differ from isotopes?
A. Radioactive isotopes have more neutrons than do isotopes. B. Radioactive isotopes are stable; isotopes are unstable. C. Radioactive isotopes have fewer neutrons than do isotopes. D. Radioactive isotopes are unstable; isotopes are stable.