Answer: Higher priority groups on same side.
- A Higher priority groups on opposite sides
- B Lower priority groups on same side
- C Higher priority groups on same side
- D No stereochemistry
Correct answer: C. Higher priority groups on same side
Explanation: Z comes from the German word zusammen meaning together, indicating same-side arrangement.
Geometric (cis-trans) isomers of 1,2-dichloroethene differ only in the relative arrangement of groups across the rigid C=C double bond.
Concept context
General Organic Chemistry covers the rules behind all organic reactions. Covers inductive effect, resonance, hyperconjugation, types of reactions (substitution, addition, elimination), and isomerism including optical and geometric forms.
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