Radioactive elements emit \alpha, \beta \;and\; \gamma rays and are characterised by their half-lives. The radioactive isotope of Hydrogen is
(i) Protium
(ii) Deuterium
(iii) Tritium
(iv) Hydronium

Answers (1)

The answer is the option (iii) Tritium

Tritium is radioactive as the neutron-proton ratio is more than 1.5, and tritium has n=2 and p=1.

 

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