First slide

Lewis theory

Question

Which of the following is a Lewis acid ?

Easy

A

CCl₄
B

BF₃
C

H₂O
D

SO₄^2-

Solution

BF₃ accepts a pair of electrons from F¯ ion and forms $BF_{4}^{-}$ . BF₃ (g) is an electron deficient molecule.

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