Classwork Series and Exercises {Chemistry- SS1}: Experimental Discoveries of Atomic Particles

Introduction Electrons Electrons were discovered by Sir John Joseph Thomson in 1897 in his cathode ray experiment. He subjected residual gas to a high potential difference at a very low pressure. He observed rays travelling in straight lines from the cathode. He called the rays cathode rays.  After many experiments of cathode-rays, J.J. Thomson demonstrated [...]