What are Lewis acids and bases? Give two example for each.

Explanation

(i) Lewis acid is a species that accepts an electron pair.
(ii) Lewis acid is a positive ione (or) an electron deficient molecule.
(iii) Exampel, `Fe^(2+),CO_(2), BF_(3),SiF_(4)` etc….
(i) Lewis acid is a species that donates an electron pair.
(ii) Lewis acid is an anion (or) neutral molecule with atlesat one lone pair of electrons.
(iii) Example, `NH_(3),F^(-),CH_(2)=CH_(2),CaO` etc...