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AP EAMCET20226 Jul 2022Evening ShiftChemistryIonic EquilibriumActual

Which of the following behaves as a Lewis acid?

Options

  1. APH ₃
  2. BBF ₃
  3. CNMe ₃
  4. DCO

Correct answer

B. BF ₃

Step-by-step solution

Electron deficient molecules are Lewis acids whereas electron rich compounds (having lone pair) are Lewis bases. NMe ₃, PH ₃ and CO are Lewis bases as they have electron pairs which they can donate. BF ₃ is Lewis acid as it is electron deficient ( B has 6 electrons in valence shell).

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