Question

What is true about radioactive isotopes of an atom?

A They are more abundant.
B They are more stable.
C They are more scarce.
D They are less stable.

Answer 1

Radioactive isotopes of an atom are less stable.

• A radioactive isotope can be described as species that have different masses, nuclei which are unstable and lose excess energy by the emission of radiation.
• The reason that radioactive isotopes are unstable are because they have too many electrons.
• Example of radioactive isotope is carbon-14.
• Radioactive isotopes are not much abundant and are also not stable.