Radioactivity – Definition, Types & Uses
Radioactivity Definition The phenomenon of spontaneous emission of radiations by heavy elements is called radioactivity. The elements which show this phenomenon is called radioactive elements. Radioactivity was discovered accidentally by Antoine Henri Becquerel in 1896. α-particle: It is called as alpha particle. It is a helium nucleus having two protons and two neutrons ( ). β-particle: It … Read more
