Showing posts from November, 2017

Drawbacks of Bohr Atomic Theory

Bohr Theory Drawbacks : Unable to explain about 1) Spectra of atoms having more than one electron 2) Fine structure of spectral lines(Fine structure means one line is composed of more number of lines) 3) Intensity variation in spectral lines (Different spectral lines have different intensity) 4) Zeeman effect (splitting of spectral lines in presence of magnetic field) 5) Stark effect (splitting of spectral lines in presence of electric field) 6) Chemical bonding 7) Arrangement of electrons in an atom 8) Structure of molecules 9) how mvr = nh/2π (He didn't derive this expression mathematically, later de-Broglie derived by using his hypothesis-matter waves)