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...Chapter stereochemistry and bonding in main group compounds vsepr theory th one of the most important discoveries century was lewis s description chemical bond as a shared pair electrons this remarkably brilliant idea connected some inventions chemistry from like mendeleev periodic table elements van t hoff formulation tetrahedral carbon also laid down foundation advanced theoretical models for used today cubical atoms concept electron pairs proposed by can be illustrated shown below figure sharing between valence shell repulsion is actually successor which says that covalent portrayed now although model explained correlation an extremely beautiful manner it had no basis at time later wolfgang pauli rationalized pairing proposing exclusion principle being extension finds its roots initial carried out two british chemists nevil sidgwick herbert powell who correlated number central atom molecule to profile around copyright mandeep dalal textbook inorganic volume i basic proposal all clou...