Question

Explain the different between JJ Thomson and Rutherford structure of atoms including advantage disadvantage as well as

Answer 1

IN JJ THOMSON THE MODEL WAS A SPHERE THAT HAS CHARGE OF PROTONS AND ELECTRONS ARE PRESENT AS SEEDS THAT ARE PRESENT IN A WATERMELON.IN RUTHERFORD STRUCTURE,THE ELECTRONS REVOLVE AROUND THE NUCLEUS IN A RING.IN JJ THOMSON MODEL IT WAS NOT EXPLAINED CLEARLY ABOUT THE ELECTRONS OR PROTONS AND IN RUTHERFORD MODEL THE ELECTRONS REVOLVE AND IF ITS ENERGY IS EMPTY THEY WILL FALL INTO THE NUCLEUS AND THERE WILL BE NO MATTER THAT WE SEE NOW.THIS WAS THE DRAWBACK OF RUTHERFORD MODEL.

Answer 2

Thomson's Plum Pudding Model

In 1904, Thomson proposed the plum pudding model of the atom. The model was named after the consistency of plum pudding with raisins floating throughout. The pudding represented a positively charged filling in which negatively charged electron "raisins" floated. According to the model, the filling was roughly the same consistency everywhere in an atom. Thomson was awarded the Nobel Prize for his theory, and the plum pudding model remained the dominant theory of the atom until around 1908, when it was superseded by the planetary model.

Rutherford's Planetary Model

In 1908, Thomson's former student, Rutherford, proposed that the plum pudding model was incorrect, because each atom contained a central nucleus. To test his thesis, Rutherford shot alpha rays at a sheet of gold only 1/3000 inch thick. If Thomson's model were correct, every alpha ray would shoot through the sheet of metal because the ray would simply pass through the atom's "pudding." However, Rutherford noticed that some rays shot back. This implied that they bounced off something solid, which Rutherford thought was a central nucleus. He thus added this component to Thomson's model, which had no central nucleus.