Isotope(s) of hydrogen which emits low energy \(\beta^-\) particles with \(t_{1/2}\) value \(\gt\) 12 years is/are
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- Protium
- Tritium
- Deuterium
- Deuterium and Tritium
The Correct Option is B
Solution and Explanation
Tritium (\(^3_1\mathrm{H}\)) is radioactive: \(^3_1\mathrm{H}\rightarrow{}^3_2\mathrm{He} + \beta^-\), emitting low-energy beta particles, with \(t_{1/2} = 12.33\) years \(\gt 12\) years.
Answer: (2) Tritium
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