Which of the following is not a Lewis base?

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Question

(D) Lewis base is defined as a substance that can donate a lone pair of electrons.$CN^{-}$,$ROH$,and $NH_3$ all possess lone pairs of electrons that c

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$AlCl_3$

Vedclass · Answer

(D) Lewis base is defined as a substance that can donate a lone pair of electrons.$CN^{-}$,$ROH$,and $NH_3$ all possess lone pairs of electrons that can be donated.$AlCl_3$ is an electron-deficient molecule (it has an incomplete octet) and acts as a Lewis acid because it can accept a pair of electrons.Therefore,$AlCl_3$ is not a Lewis base.

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