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  1. How many lone pairs are on the central atom in BCl3?
    Lewis Structure:
    Lewis structure is a representation of the valence electrons of the atom of the chemical elements which are bonding and nonbonding. Valence electrons are the outermost electrons in the atom of the chemical elements. The shape of the compound is determined using different principles such as octet rule, molecular orbital theory, and valence shell electron pair repulsion.
    Solution and Explanation:
    There are no lone pairs in the central atom of boron trichloride because it is one of the exceptions in the octet rule. It is an inorganic compound. Boron has only three electrons in its valence shell and overall has five electrons in its atom. The central atom boron can only form three single bonds with three chlorine atoms

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