MCQ
The order of decreasing nucleophilicity of the following is
  • A
    ${H_2}O > \mathop O\limits^\Theta  H > C{H_3}CO\mathop O\limits^\Theta   > C{H_3}\mathop O\limits^\Theta  $
  • $C{H_3}\mathop O\limits^\Theta   > \mathop O\limits^\Theta  H > C{H_3}CO\mathop O\limits^\Theta   > C{H_3} - S\mathop {{O_3}}\limits^\Theta  $
  • C
    $C{H_3}CO\mathop O\limits^\Theta   > C{H_3}\mathop O\limits^\Theta   > \mathop O\limits^\Theta  H > {H_2}O$
  • D
    $\mathop O\limits^\Theta  H > C{H_3}\mathop O\limits^\Theta   > C{H_3}CO\mathop O\limits^\Theta   > {H_2}O$

Answer

Correct option: B.
$C{H_3}\mathop O\limits^\Theta   > \mathop O\limits^\Theta  H > C{H_3}CO\mathop O\limits^\Theta   > C{H_3} - S\mathop {{O_3}}\limits^\Theta  $
b

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