CIE A Level Chemistry (9701) exams from 2022

Revision Notes

6.2.5 Defining Complexes

Define Complex

  • A complex is a molecule or ion formed by a central metal atom or ion surrounded by one or more ligands
  • A ligand is a species that contains one or more lone pairs of electrons
  • The ligand forms a dative covalent bond with the central metal atom or ion, by donating its lone pair of electrons

Chemistry of Transition Elements - Example of a Complex, downloadable AS & A Level Chemistry revision notes

Example of a complex ion formed by a central aluminium(III) ion and six water molecule ligands


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