Compounds with the same molecular formula but different structural formulae are called
Correct answer: B. isomers
- A. isotopes
- B. isomers
- C. homologues
- D. allotropes
Explanation
Isomers share the molecular formula but differ in how the atoms are connected or arranged in space, so they are genuinely different substances with different properties. Butane and 2-methylpropane both have the formula C4H10 yet boil at different temperatures. Homologues differ by CH2 and so have different molecular formulae.
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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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