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NEET 2023

Exam: NEET
Year: 2023
Subject: Chemistry
Chapter: Ionic Equilibrium

NEET 2023 · Chemistry · Ionic Equilibrium

Amongst the given options which of the following molecules/ion acts...

Amongst the given options which of the following molecules/ion acts as a Lewis acid?

Options

A ${OH}^{-}$
B ${NH}_{3}$
C ${H}_{2}O$
D ${BF}_{3}$

Correct answer

D. ${BF}_{3}$

Step-by-step solution

Lewis Acids are the chemical species which have empty orbitals and are able to accept electron pairs from Lewis bases. ${BF}_{3}$ has $6$ electrons in the central metal atom, boron. Hence, it is electron deficient and is a Lewis acid. The other species ${OH}^{-}$ , ${NH}_{3}$ and ${H}_{2}O$ are not having any empty orbitals in them, instead they can donate lone pairs(Lewis bases).

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