Question

Physical properties of geometrical isomers.

Answer 1

1. Melting point.

Trans isomer being symmetrical fits well into the crystal lattice and greater energy is required to break the lattice.

2. Boiling point

Since cis isomer has higher dipole moment than trans isomer so it has higher boiling point.

3. Dipole moment

Cis is more polar than trans thus µ cis > µ trans.

Geometrical isomerism in nitrogen compounds aldoxime. (C₆H₅CH=NOH)