Which of the following forms of hydrogen emits low energy \(\beta^-\) particles?
Show Hint
- Tritium \(_1^3\mathrm{H}\)
- Proton \(\mathrm{H^+}\)
- Protium \(_1^1\mathrm{H}\)
- Deuterium \(_1^2\mathrm{H}\)
The Correct Option is A
Solution and Explanation
Tritium \(_1^3\mathrm{H}\) is radioactive (half-life about 12.33 years) and decays by emitting low energy \(\beta^-\) particles: \(_1^3\mathrm{H} \to {}_2^3\mathrm{He} + \beta^- + \bar{\nu}\).
Answer: (1) Tritium \(_1^3\mathrm{H}\)
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