Chemistry - Organic Chemistry - Hydrocarbons - Alkenes - structure and reactions - Alkene Properties and Reactions
4-step walkthrough. Step 1: 'STRUCTURE: C=C double bond = 1σ + 1π bond. sp² carbons, 120° angles, PLANAR around the double bond. The π bond is above and below the plane - exposed and reactive. Restricted rotation around C=C (unlike C-C) → geometric isomerism possible.' Step 2: 'GEOMETRIC (CIS-TRANS)