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Question

The compound that is not a lewis acid is


A

BCl3

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B

BaCl2

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C

AlCl3

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D

SnCl4

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Solution

The correct option is B

BaCl2


The explanation for the correct option

Option (B)BaCl2 — Barium chloride.

  • Lewis acid is a species that contains an empty orbital.
  • Capable of accepting an electron pair from a base known as lewis base.
  • Results in Lewis adduct.

The explanation for the incorrect option

Option (A) BCl3 .

  • As boron chloride is a lewis acid.
  • Thus this option is incorrect.

Option (C) AlCl3

  • As aluminium chloride accepts electron pairs it is a lewis acid.
  • Thus this option is incorrect.

Option (D) SnCl4

  • As stannous chloride is lewis acid.
  • Thus this option is incorrect.

Hence Barium Chloride (BaCl2) is not a lewis acid, option (B) is the correct answer.


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