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What are Lewis acids and bases? Give two example for each. |
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Answer» I. Lewis acids: (i) Lewis acid is a species that accepts an electron pair. (ii) Lewis acid is a positive ion (or) an electron deficient molecule. (iii) Example, Fe2+ , CO2 , BF3 , SiF4 etc… II. Lewis bases: (i) Lewis base is a species that donates an electron pair. (ii) Lewis base is an anion (or) neutral molecule with atleast one lone pair of electrons. (iii) Example, NH3 , F- , CH2 = CH2 CaO etc…. |
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