Radioactive Rays 🔇
Radioactivity ➖The process of emission of particles from nuclei because of the nuclear instability; is known as radioactivity. ➖The substance that releases such energy/rays is known as radioactive substance. ➖The invisible rays released from such radioactive substance are known as radioactive rays. ➖Likewise, radioactivity is a nuclear phenomenon that happens (naturally) because of the nuclear instability of atoms. ➖In 1896 Henri Becquerel first observed the phenomena of radioactivity, but the term ‘radioactivity’ was coined by Marie Curie. ➖Marie Curie discovered the radioactive elements namely Polonium and Radium in 1898. ➖For her discovery, Marie Curie won the Nobel Prize. ✅Radioactive Rays ➖After long years of experiment, Ernest Rutherford along with his colleague (Hans Geiger and his student Ernest Marsden), discovered alpha rays, beta rays, and gamma rays. ➖These rays emitted as the result of the disintegration of atoms. ✅Alpha (α) Particles * Alpha particles are usua...