Question

The concept of elliptical orbits for electron was introduced by

Answer 1

Sommerfield had presented modified and extended form of bohr's theory .according to him it is not necessary that all electrons move in same circular orbit but some of those electron moves in elliptical orbit. electrical orbit has two foci and nucleus of atom is situated at one these foci

Answer 2

● The concept of elliptical orbits for electron was introduced by Sommerfeld.