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AP EAMCET · Chemistry · Ionic Equilibrium

Which of the following behaves as a Lewis acid?

  1. A \(\mathrm{PH}_3\)
  2. B \(\mathrm{BF}_3\)
  3. C \(\mathrm{NMe}_3\)
  4. D \(\mathrm{CO}\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(\mathrm{BF}_3\)

Step-by-step Solution

Detailed explanation

Electron deficient molecules are Lewis acids whereas electron rich compounds (having lone pair) are Lewis bases. \(\mathrm{NMe}_3, \mathrm{PH}_3\) and \(\mathrm{CO}\) are Lewis bases as they have electron pairs which they can donate. \(\mathrm{BF}_3\) is Lewis acid as it is…