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JEE Main202117 Mar 2021Morning ShiftChemistryIonic EquilibriumActual

Which of the following compound CANNOT act as a Lewis base?

Options

  1. ANF 3
  2. BPCl 5
  3. CSF 4
  4. DClF 3

Correct answer

B. PCl 5

Step-by-step solution

Lewis base: Chemical species which has capability to donate electron pair. In NF 3 ,   SF 4 ,   ClF 3 central atom (i.e. N , S , Cl ) having lone pair therefore act as Lewis base. In PCl 5 , central atom P does not have lone pair therefore does not act as Lewis base.

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