To overcome the drawbacks in the Rutherford Model, Bohr proposed his Atomic Model and put forward three Postulates.įig.

This would result in a continuous streak in frequency of the electromagnetic radiation. Also, if the electrons spiral inwards, the emission would increase the frequency rapidly as the orbit would get smaller and faster. The Rutherford Model thus becomes inaccurate as it projects that all Atoms are unstable. So the electron would lose its energy, and rapidly spiral inwards and collapse into the Nucleus on a timescale of approximately 16 picoseconds. When the laws of classical mechanics are applied, the electron will release an electromagnetic radiation while orbiting a nucleus. Rutherford imagined a planetary model of an atom but it had a mechanical drawback. Rutherford deduced that Atom comprised of a diffuse cloud of negatively charged electrons that surrounded a tiny, dense, positively charged nucleus in the early 20th century. Rydberg’s observation can be seen in Bohr’s theory as the description of the energies of transitions or quantum jumps between orbital energy levels. The success of the Bohr’s Atomic Model lies in explaining the Rydberg formula for the spectral emission lines of atomic hydrogen. The improvement done to Rutherford’s Model is mainly a quantum physical interpretation of the model. What is Neil Bohr’s Atomic ModelĪccording to Niels Bohr, his Atomic Model explained the existence of an Atom which consists of a small, dense Nucleus which is surrounded by orbiting electrons much like the structure of the Solar System, where the attraction between the particles is due to electrostatic force rather than gravity.įig. This post will discuss about what is Neil Bohr’s Atomic Model, how it different from Rutherford’s Atomic Model, its three postulates and limitations. Neil Bohr’s Atomic Model is an improvement of Rutherford’s Atomic Model and was presented by both Niels Bohr and Ernest Rutherford in 1913.

Atomic model