This video lecture from Atomic Structure (F.Sc. First Year Chemistry) covers the Explanation of different defects in Bohr’s Atomic Model related to the shape of the atom, the Zeeman (splitting of lines due to magnetic field) and Stark Effect (splitting of lines due to electric field), multi electron system and splitting of spectral lines. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.