Which of the following forms of hydrogen emits low energy b- particles?

a. Proton H+

b. Deuterium \(_{1}^{2}\textrm{H}\)

c. Protium \(_{1}^{1}\textrm{H}\)

d. Tritium \(_{1}^{3}\textrm{H}\)

Answer: (d)

Tritium isotope of hydrogen is radioactive and emits low energy b particles. It is because

of high n/p ratio of the tritium which makes the nucleus unstable.

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