This video lecture from Chemical Bonding (F.Sc. First Year Chemistry) covers the concept of bond order, the formula to calculate it, the filling of electrons in the molecular orbitals of Helium, Nitrogen and oxygen atoms and finding their bond orders, the concept of paramagnetism and its explanation in the light of MOT. 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.