Edexcel IAL Chemistry AS 5.2 Geometric isomerism
Edexcel IAL Chemistry AS 5.2 Geometric isomerism

Pearson Edexcel IAL Chemistry syllabusChemistry YCH11First assessment 2019
Inspect both alkene carbons for two different attached groups, keep connectivity unchanged and draw the alternative arrangement across the fixed double bond.
How this is tested
- Explain geometric isomerism through restricted rotation around a carbon–carbon double bond.
- Check that each alkene carbon has two different substituents before assigning isomers.
- Draw or select the alternative geometric isomer without changing atom connectivity.