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Q.

Which of the following can act as a Lewis base?

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a

NCl3

b

PCl3

c

SbCl3

d

NBr3

answer is A, D.

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Detailed Solution

NCl3 and NBr3 acts as Lewis bases by donation of lone pair of e–.s on Nitrogen on the other hand in PCl3, SbCl3 - lone pair on P and Sb is not available for donation due to -I effect of chlorine. as well as due to larger size of central atom

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