PPT Slide
- Bohr used Planck’s and Einstein’s ideas about quantized energy proposing that hydrogen atoms had only certain fixed energy states.
- Each of these states was associated with a fixed circular orbit of the electron around the nucleus.
- Bohr proposed that atoms do not radiate energy while in one of their fixed (stationary) energy states.
- When the electron moves to a different orbit, the atom changes to another energy state.
- This happens only by the atom absorbing or emitting a photon.
- The photon energy equals the difference in energy between the two stationary states:
Notes: