Tritium undergoes radioactive decay giving

Describe the rays emitted by radioactive elements.

The radiations from a naturally occurring radio element,as seen after deflection in a magnetic field in one direction,are

After losing a number of $\alpha$ and $\beta$ particles,$_{92}U^{238}$ changed to $_{82}Pb^{206}$. The total number of particles lost in this process is

$A$ radioactive atom $^X_Y M$ emits two $\alpha$ particles and one $\beta$ particle successively. The number of neutrons in the nucleus of the product will be

Which of the following isotopes of uranium is the most radioactive?