THE FOUR QUINTESSENIALS OF BOHR: 1) Electrons assume only certain orbits around the nucleus. These orbits are stable and called "stationary" orbits. 2)Each orbit has an energy associated with it. For example the orbit closest to the nucleus has an energy E1, the next closest E2 and so on. 3)Light is emitted when an electron jumps from a higher orbit to a lower orbit and absorbed when it jumps from a lower to higher orbit. 4) The energy and frequency of light emitted or absorbed is given by the difference between the two orbit energies, e.g., [COURTESY OF THE INDIANA UNIVERSITY - NORTHWEST CHEMISTRY 101 DEPARTMENT]
Finally, the last but certainly not least fact about Bohr's Model is that it left a legacy of work in finding and designing new ways to develop atomic models. The concepts that he created using his model went on to inspire the development of modern quantum mechanics as we know it.
Well, That's it for our lesson on Bohr! I'll see you next time- right back here on "Science at Home"! Goodbye!