Which of the following is not a Lewis acid?

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(D) Lewis acid is an electron pair acceptor. $BF_3$ and $AlCl_3$ are electron-deficient compounds and act as Lewis acids. $HCl$ can act as a Lewis aci

Vedclass · Accepted Answer

$LiAlH_4$

Vedclass · Answer

(D) Lewis acid is an electron pair acceptor. $BF_3$ and $AlCl_3$ are electron-deficient compounds and act as Lewis acids. $HCl$ can act as a Lewis acid due to the presence of an empty orbital on the hydrogen atom or by accepting electron pairs. $LiAlH_4$ contains the $AlH_4^-$ ion,which can donate a hydride ion $(H^-)$,acting as a nucleophile or Lewis base. Therefore,$LiAlH_4$ is not a Lewis acid.

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