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Tritium, a radioactive isotope of hydrogen, emits which of the following particles?
A
Alpha ($\alpha$)
B
Gamma ($\gamma$)
C
Neutron (n)
D
Beta ($\beta^-$)
Detailed Solution
Tritium ($^3_1H$) is radioactive and emits low-energy $\beta^-$ particles ($_{-1}e^0$).