While trans isomers dominate in melting point, Cis isomers typically possess higher boiling points. — Isomerism and Stereochemistry Chemistry Question

💡 Solution & Explanation

Boiling point is dictated by the strength of intermolecular forces in the liquid phase. In a trans isomer, opposing bond dipoles often cancel each other out, making the molecule non-polar ($\mu \approx 0$). In a cis isomer, the dipoles add constructively, yielding a highly polar molecule with a net resultant dipole moment. This polarity creates strong dipole-dipole attractions, requiring more heat to boil.