Question

bohr's sommerfeld model of an atom

Answer 1

according to bohr electron revolves in a fixed energy level or Orbit in which the energy is fixed

there are energy level naming klmn in which the fixed number of electron will revolve

the orbit which is situated near the nucleus having low energy and the orbit which is far from the nucleus have higher energy

Answer 2

With A. Sommerfeld’s extension of the Bohr theory in 1915–1916, it was turned into a powerful tool of atomic research and adopted and further developed by German physicists in particular. The new and more general Bohr–Sommerfeld theory described the atom in terms of two quantum numbers, while Bohr had originally used only one quantum number. With this extension the theory provided an explanation of the Stark effect, the ordinary Zeeman effect, and the fine structure of the hydrogen spectrum. Other developments based on X-ray spectroscopy were less successful, as were attempts to understand the structure of the helium atom. Yet, by 1920 nearly all physicists accepted the theory as the only viable framework for atomic and quantum research. But not all agreed: the chapter includes an account of conceptual and other objections against the theory raised by J. Stark in Germany and a few other physicists.

hope it helps you. . . . . follow me. . . . mark as a brainlist. . . .