Shapes of Complex Ions (AQA A-Level Chemistry): Flashcards

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Shapes of Complex Ions
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No. of ligands in octahedral complexes

Six ligands

Typical ligands in octahedral complexes

H2O\text{H}_2\text{O} and NH3\text{NH}_3

Isomerism types in octahedral complexes

Cis-trans and optical isomerism

No. of ligands in tetrahedral complexes

Four ligands

Isomerism in tetrahedral complexes

None (do not exhibit cis-trans or optical isomerism)

No. of ligands in square planar complexes

Four ligands in a square arrangement

Medical use of cisplatin & effective isomer

Cancer treatment; only cis isomer is effective

No. of ligands in linear complexes

Two ligands

Tollens' reagent complex & use

[Ag(NH3)2]+[\text{Ag}(\text{NH}_3)_2]^{+}; tests for aldehydes

Property of optical isomers

Non-superimposable mirror images

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