question_answer

A moving particle should radiate energy continuously; likewise a revolving electron should also radiate energy continuously and fall into the nucleus and the atom should collapse. Explain.

Answer:

The following are the reasons: (i) The emission of energy is not continuous but is discontinuous. (ii) Electrons revolve around the nucleus in specified paths called orbits. These orbits have constant energy. As long as electrons revolve in these orbits, they neither lose energy nor gain energy. Hence it does not fall inside the nucleus, and the atom does not collapse.