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8.4. Organic chemistry reaction mechanism — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry8.4. Organic chemistry reaction mechanism1 Mark
MCQ
The increasing order of nucleophilicity of the following nucleophiles is

$(a)\,\,CH_3CO_2^-$                                                    $(b)\,\,H_2O$
$(c)\,\,CH_3SO_3^-$                                                    $(d)\,\,\bar OH$

  • A
    $(b) < (c) < (a) < (d)$
  • ✓
    $(a) < (d) < (c) < (b)$
  • C
    $(d) < (a) < (c) < (b)$
  • D
    $(b) < (c) < (d) < (a)$
✓

Answer

Correct option: B.
$(a) < (d) < (c) < (b)$
b
As electronegativity of the central atom decreases, its nucleophilicity increases. Here,  carbon has the least electronegativity. So, $C H_{3}^{-}$ will have the highest nucleophilicity.

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