Butane and methylpropane are examples of _________.

• A. stereoisomers
• B. geometric isomers
• C. enantiomers
• D. structural isomers
• E. optical isomers

Answer: (D)

Verified step by step guidance

1. Understand the concept of isomers: Isomers are compounds with the same molecular formula but different structures or arrangements of atoms.
2. Identify the types of isomers: There are several types of isomers, including structural isomers, stereoisomers, geometric isomers, enantiomers, and optical isomers.
3. Define structural isomers: Structural isomers, also known as constitutional isomers, have the same molecular formula but differ in the connectivity of their atoms.
4. Analyze the given compounds: Butane and methylpropane both have the molecular formula C₄H₁₀, but they differ in the arrangement of their carbon atoms.
5. Conclude that butane and methylpropane are structural isomers because they have the same molecular formula but different structures, specifically in the connectivity of their carbon atoms.