JEE Main | 2018Ionic EquilibriumHard

Question

Which of the following are Lewis acids ?

Options

A.

AlCl3 and SiCl4

B.

PH3 and SiCl4

C.

BCl3 and AlCl3

D.

PH3 and BCl3

Solution

BCl3 & AlCl3 both have vacant p-orbital & incomplete octet. So they act as Lewis acid.

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