Question

A charged particle revolving around an oppositely charged particle should lose energy continuously and collapse into necleus following a spiral path . But the orbital revolutuon of an electron is stable . Why?

Answer 1

This would be the behaviour if the electron is a particle. A charged particle when it moves in an orbit it need to accelerate and when a charge accelerates it must radiate some of its energy as an electromagnetic energy. However, electron shows a dual behaviour as it a wave also besides being a particle. Due to its wave nature, the electrons do not emit electromagnetic energy while moving around the nucleus in their orbit. They radiate energy only when they change orbital radius.