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NEET2013ChemistryIonic EquilibriumActual

Which of these is least likely to act as a Lewis base?

Options

  1. ACO
  2. BF ⁻
  3. CBF ₃
  4. DPF ₃

Correct answer

C. BF ₃

Step-by-step solution

Electron rich species are called Lewis base. Among the given, BF ₃ is an electron deficient species, so have a capacity of electron accepting instead of donating that's why it is least likely to act as a Lewis base. It is a Lewis acid.

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