Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters ?
Correct answer: A. Ra-226
- A. Ra-226
- B. Sr-90
- C. Au-198
- D. I-131
Explanation
Radium-226 undergoes a decay series that produces alpha and beta particles along with gamma radiation, unlike the other listed isotopes, which emit fewer radiation types. Its alpha emissions are especially damaging if the material enters the body.
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