In 1913, Niels Bohr, a Danish physicist, developed his model of the atom. While Rutherford had focused his theory on the nature of the space inside an atom, and mainly described the nucleus, Bohr worked more to find the nature of the electrons, and the nature of their path around the nucleus.
The key points of Bohr’s theory were:
The key points of Bohr’s theory were:
- Electrons in an atom orbit the nucleus.
- Electrons orbit in a stable state, that is, without radiating energy, only in certain paths; in discrete sets of distances from the nucleus.
- These orbits are also called energy levels, as they are associated with definite energies.
- Electrons can only gain/lose energy by jumping from one allowed orbit to another.
- The differences in energy levels of two orbits is proportional to the frequency of the electromagnetic energy radiated when an electron traverses between these two levels.
Planck’s Equation
Orbiting Electronics 