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Question: Answered & Verified by Expert
Why do para-isomers have higher melting points compared to ortho- and meta-isomers?
ChemistryHaloalkanes and HaloarenesNEET
Options:
  • A They have greater polarity.
  • B They have lower molecular mass.
  • C They are less symmetric.
  • D They fit better in a crystal lattice due to symmetry.
Solution:
1443 Upvotes Verified Answer
The correct answer is: They fit better in a crystal lattice due to symmetry.
The higher melting points of para-isomers are due to their symmetry, which allows them to fit better in a crystal lattice.

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