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Q.

Which of the following can act as a Lewis acid?

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a

BCl3

b

BBr3

c

PCl3

d

SbCl3

answer is A, B, C, D.

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Detailed Solution

Question Image

BBr3, BCl3 accepts lone pair of e–.s into their vacant Pz - orbital. Hence acts as Lewis acids.
While PCl3, SbCl3 - acts Lewis acids by accepting lone pair of electrons into vacant d-orbitals

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