This video lecture from Group IIIA and Group IVA Elements (F.Sc. second year Chemistry) covers the structure of Silicones. These are polymeric compounds of silicon having Si-O linear chains with alkyl groups on either sides of silicon. 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.