(It was a running joke that any theory of atomic and molecular spectra could be destroyed by throwing a book of data at it, so complex were the spectra. He explained about electrons and the different energy. But, in spite of years of efforts by many great minds, no one had a workable theory. Therefore, Rutherford basically explained a nucleus of an atom whereas Bohr took the model one step ahead. The Bohr model of the hydrogen atom (Z 1) or a hydrogen-like ion (Z > 1), where the negatively charged electron confined to an atomic shell encircles a small, positively charged atomic nucleus and where an electron jumps between orbits, is accompanied by an emitted or absorbed amount of electromagnetic energy (h). These orbits are called stable orbits or non-radiating orbits. First Postulate: Electron revolves round the nucleus in discrete circular orbits called stationary orbits without emission of radiant energy. Maxwell and others had realized that there must be a connection between the spectrum of an atom and its structure, something like the resonant frequencies of musical instruments. Write Bohrs postulates for the hydrogen atom model.

Bohr's model of the hydrogen atom