Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-nuclear-science-11e5a8a88ac0
What is radioactivity?
The spontaneous decay of unstable nuclei emitting radiation.
- The joining of atoms into molecules
- The spontaneous decay of unstable nuclei emitting radiation ✔
- The reflection of light by metals
Why: Radioactivity is unstable nuclei decaying and emitting particles or rays over time.
Huh, didn't know that: Radioactivity is unstable nuclei decaying and emitting particles or rays over time.
Radioactivity is instability with a release schedule.
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References
Answer: The spontaneous decay of unstable nuclei emitting radiation. Radioactivity is unstable nuclei decaying and emitting particles or rays over time.
- Nuclear physics en.wikipedia.org/wiki/Nuclear_physics
These "radioisotopes" decay over time
Checked 2026-11-07.
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