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Question

Which one of the following acts as a Lewis base in complexes?


A
CO2
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B
BF3
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C
NH3
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D
BCl3
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Solution

The correct option is B NH3
NH3 acts as a Lewis base in complexes. It has a lone pair of electrons on it, which it can readily donate to another atom or molecule. While CO2,BF3,BCl3 acts as lewis acid.

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