This video lecture from Group IIIA and Group IVA Elements (F.Sc. second year Chemistry) covers the structure of boric acids. Boric acids include orthoboric acid, metaboric acid, tetraboric acid and pyroboric acid. Orthoboric acid is most stable and other acids are stable only as solids and react with water to form orthoboric acid in solution. 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.