Which of the following statements is correct?

  1. A

    BCl3 and AlCl3 are both Lewis acids and BCl3 is stronger than AlCl3

  2. B

    BCl3 and AlCl3 are both Lewis acids and AlCl3 is stronger than BCl3

  3. C

    BCl3 and AlCl3 are both equally strong Lewis acids

  4. D

    BCl3 and AlCl3 are both not Lewis acids

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    Solution:

                             

    Acidic strength order:

    underrightarrow {BC{l_3} > ,AlC{l_3}}

    As atomic size of central atom increases,

    metallic nature increases,

    electron accepting tendency decreases,

    Lewis acidic strength decreases.

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