Hydrolysis

• Hydrolysis is not observed with ions derived from strong acids or bases:

  Cations of group I and II (except Be2+)
  
  Anions: Cl-, Br-, I-, NO3-, ClO4-

• Hydrolysis is observed for:

  Cations with charge > +3
  
  Transition metal +2 ions
  Some post-transition metal ions with high charge

• Common for Fe3+, Cr3+, Al3+, Zn2+, Cu2+, Bi3+, Pb4+

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