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JEE Main2018ChemistryIonic EquilibriumActual

Which of the following are Lewis acids?

Options

  1. ABCl 3 and AlCl 3
  2. BPH 3 and BCl 3
  3. CAlCl 3 and CCl 4
  4. DPH 3 and CCl 4

Correct answer

A. BCl 3 and AlCl 3

Step-by-step solution

Both BCl 3   and   AlCl 3 have vacant p - orbital and incomplete octet. So they accept lone pair and act as Lewis acids.

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