Question

describe thomson model of atom

Answer 1

J. J. Thomson, who discovered the electron in 1897, proposed the plum pudding model of theatom in 1904 before the discovery of the atomic nucleus in order to include the electron in the atomic model. In Thomson's model, the atom is composed of electrons 

Answer 2

In 1897, J.J.Thomson discovered a negatively charged particle known as an electron. Thomson discovered electron by cathode ray tube experiment. Cathode ray tube is a vacuum tube. Thomson assumed that an electron is two thousand times lighter than a proton and believed that an atom is made up of thousands of electrons having the negative charge. In this model, he considered atoms to have a cloud of negative charge and the positive charges. He along with Rutherford was also the first to demonstrate the ionization of air by X-rays. Thomson’s model of an atom is similar to plum pudding model or a watermelon.