Examlex
Which of the following is a concern associated with the Competence Stage?
Stable Isotopes
Variants of elements that have a stable nucleus and do not undergo radioactive decay over time.
Unstable Isotopes
Atoms with a nucleus that has an excess of energy or mass, making them decay into more stable forms over time.
Stable Isotopes
Variants of elements that have the same number of protons but different numbers of neutrons, and do not undergo radioactive decay.
Radioactive Isotopes
Radioactive isotopes, or radioisotopes, are variants of chemical elements that emit radiation due to an unstable nucleus and undergo radioactive decay.
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