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Shapes of Complex Ions

• A complex with coordination number 4 may be tetrahedral or square planar in shape, depending upon the orbitals the metal atom or ion uses for bonding.

• A complex with coordination number 6 is likely to be octahedral in shape.

• A complex with coordination number 5 may be trigonal bipyramidal or square pyramidal some shapes of complex ions are shown in Fig. 19.4