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Question
What are Lewis acids and bases? Give two examples for each.
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Solution
1. Lewis acids:
- Lewis acid is a species that accepts an electron pair.
- Lewis acid is a positive ion (or) an electron deficient molecule.
- Example, Fe2+, CO2, BF3, SiF4 etc.
2. Lewis bases:
- Lewis base is a species that donates an electron pair.
- Lewis base is an anion (or) neutral molecule with atleast one lone pair of electrons.
- Example, NH3, F–, CH2 = CH2, CaO etc.
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