Radio activity is due

The splitting of a heavy nucleus into two or more smaller nuclei is termed as

λ -particle is represented by

In the following radioactive decay ₉₂x²³²→ ₈₉y²²⁰, how many λ and β particles are ejected.

The phenomenon of radioactivity was discovered by

The difference between the sum of the masses of the constituent neutrons, protons and electrons and the actual isotopic mass is called

___________ is useful in understanding the evolution of life, and rise and fall of civilizations.

The most penetrating radiations are

Uranium series is