Complex (AS/A2 generic)
  Belongs to a sub-set of generics specific to the British A-Level exam system.

A complex has a central atom surrounded by election pair donating Lewis base ligands. In the A2 specifications, the bonding between the ligands and the central atom is described as “dative” or “coordinate”.
Wikipedia Page:

Complex (AS/A2 generic)
is defined with respect to the entities below:
The entities below are defined with respect to:
Complex (AS/A2 generic)
Aqueous M(II) ion (AS/A2 generic)

Aqueous M(III) ion (AS/A2 generic)

Chelate (AS/A2 generic)


Cobalt(II) EDTA complex ion

Cobalt(II) tris(ethanedioate) complex ion

Cobalt(II) tris(ethylenediamine) ion

Cobalt(III) dichloro bis(ethylenediamine) complex ion

Copper(II) EDTA complex ion

Diamminosilver(I) ion

Dichlorosilver(I) ion

Dichlorotetraaquachromium(III) ion

Dichlorotetraaquavanadium(III) ion

Dicyanosilver(I) ion

Dioxovanadium(V) ion

Dithiosulfatosilver(I) ion


Hexaamminochromium(III) ion

Hexaamminocobalt(II) ion

Hexaamminocobalt(III) ion

Hexaaquaaluminium complex ion

Hexaaquachromium(II) ion

Hexaaquachromium(III) ion

Hexaaquacobolt(II) ion

Hexaaquacopper(II) ion

Hexaaquairon(II) ion

Hexaaquairon(III) ion

Hexaaquamanganese(II) ion

Hexaaquavanadium(II) ion

Hexaaquavanadium(III) ion

Hexahydroxychromium(III) ion

Iron(II) bipyridyl ion

Iron(III) tris(ethanedioate) complex ion

Nickel(II) tris(ethylenediamine) ion

Pentaaquahydroxychromium(III) ion

Pentaaquahydroxyiron(III) ion

Pentaaquathiocyanatoiron(III) ion

Pentaaquaoxovanadium(IV) ion

Tetraamminodiaquacopper(II) ion




Tetrachlorocobolt(II) ion

Tetrachlorocopper(I) ion

Tetrachlorocopper(II) ion




chemical compound molecule metal molecular science reaction mechanism ionic material acid base geometry reactivity synthesis science knowledge chemistry Lewis