The acidity of BF3 can be explained on the basis of which of the following concepts?
(i) Arrhenius concept
(ii) Bronsted Lowry concept
(iii) Lewis concept
(iv) Bronsted Lowry as well as Lewis concept.
The answer is the option (iii) Lewis concept
Explanation: All Lewis Acids can accept a pair of electrons and hence they can be called be electron-deficient species and so BF3 is a Lewis acid.