IUPAC nomenclature: Locants – Substituents – Root (Modifier)
• Root: butane → 4-carbon chain
• Modifier: –ane → alkane
• Substituents: 2,2-dimethyl → two methyl groups at C2
Draw the molecular structure of 2,2-Dimethylbutane and 2,3- Dimethylbutane, 2-Methylpentane, 3-Methylpentane, and n-Hexane.
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