1. Tardigrade
  2. Question
  3. Chemistry
  4. Order nucleophilicity (i) OH- (ii) HS- (iii) PH - O- (iii) C2H5 - O-

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Q. Order nucleophilicity
(i) $\ce{OH^{-}}$
(ii) $\ce{HS^{-}}$
(iii) $\ce{PH - O^{-}}$
(iii) $\ce{C2H5 - O^{-}}$

Solution:

Order of nucleophilicity
$\ce{OH^{-} , HS^{-} , Ph - O^{-} , C_2 H_5 O^{-} = HS^{-} > C_2 H_5 O^{-} > OH^{-} > Ph - O^{-} }$
On increasing delocalization of e- nucleophilicity decrease