Which among the following is NOT Lewis acid?

Which among the following is NOT Lewis acid?
  1. $\mathrm{AlCl}_3$
  2. $\mathrm{H}_2 \mathrm{O}$
  3. $\mathrm{BF}_3$
  4. $\mathrm{Ag}^{+}$

Solution

$\mathrm{H}_2 \mathrm{O}$ is a lewis base not acid as it contains 2, lone pair of electrons.

Asked in: MHT CET 2022 (11 Aug Shift 1)

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