This video lecture from Fundamental Principles of Organic Chemistry (F.Sc. second year Chemistry) covers the energy levels of carbon atom and the electron distribution in ground state and in excited state. The electronic configuration is discussed along a detailed overview of the shapes of orbitals and the probabilistic model of the atom. 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.