Pentane and 2-methyl butance have the same_______________?
Correct answer: C. Percentage composition
- A. Boiling point
- B. Melting point
- C. Percentage composition
- D. Structural formula
Explanation
Pentane and 2-methylbutane are structural isomers with the same molecular formula, C5H12, so they have the same elemental percentage composition. Their structures and boiling points differ, making structural formula or boiling point incorrect choices; the likely distractor is boiling point because both are pentane isomers.
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About Isomerism
Isomerism occurs when compounds have the same molecular formula but different atom arrangements or spatial orientations. The content includes chain, position, functional, metameric and tautomeric isomerism, along with geometrical and optical isomerism, including cis-trans forms, E/Z notation, chirality and enantiomers.
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