Half life of a radioactive isotope corresponds to the time required for half of the _______________ to decay ?
Correct answer: A. Atoms
- A. Atoms
- B. Neutrons
- C. Nucleons
- D. Electrons
Explanation
Radioactive half-life is the time required for half of the radioactive nuclei or atoms in a sample to undergo decay. Neutrons, nucleons, and electrons are not the general quantity used in this definition.
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