MCQ
Which of the following is Lewis acid
  • A
    $S$
  • B
    $:C{H_2}$
  • C
    ${(C{H_3})_3}B$
  • All of these

Answer

Correct option: D.
All of these
(d)Acceptor of electron pair is known as lewis acid. $S$ 

$C{H_2},{(C{H_3})_3}B$ all can accept an electron pair so answer is $(d).$

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