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AROMATIC HYDROCARBONS
Aromatic hydrocarbons are those which contain one or more benzene rings. The name of the class come from the fact that many of them have strong, pungent aromas. Symbolic structures of some common aromatic hydrocarbons are shown below. Those hydrocarbons which do not contain a benzene ring are […]

MOLECULAR ORBITAL THEORY
According to this theory, the formation of a covalent bond takes place when two half filled orbitals of the two participating atoms come nearer and then overlap each other to form a new bigger orbital, known as a molecular orbital. The nuclei of both the atoms surround […]