Which of the Following Statements About Radioactive Isotopes Is True

question 48

Multiple Choice

Which of the following statements about radioactive isotopes is true?

• A) The nuclei of radioactive isotopes are unusually stable, but the atoms tend to lose electrons.
• B) When given a choice between radioactive and nonradioactive isotopes of the same atom, living cells are more likely to incorporate the radioactive isotopes into their structures.
• C) The energy emitted by radioactive isotopes can cause molecular damage in cells.
• D) Radioactive elements are natural and therefore not harmful.

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