Sarthaks Test
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Which of the following is not a pair of a Lewis acid and a Lewis base ?

(a) H+, (C2H5)2

(b) H2O, AlCl3 

(c) Fe3+, CO 

(d) SiF4, BF3

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Correct option  (d) SiF4, BF3


Both SiF4 & BF3 are both Lewis acids.

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