question_answer

Which of the following is correct set of physical properties of the geometrical isomers?

A)

Dipole moment	B.P.	M.P.	Stability
I>II	I>II	II>I	I>II

B)

Dipole moment	B.P.	M.P.	Stability
II>I	II>I	II>I	II>I

C)

Dipole moment	B.P.	M.P.	Stability
I>II	I>II	I>II	I>II

D)

Dipole moment	B.P.	M.P.	Stability
II>I	II>I	I>II	I>II

Correct Answer: C

Solution :

[c] In compounds I has more dipole moment than II, hence its boiling point will be higher. Melting point depends on symmetry, therefore I has higher melting point than II. Steric crowding in II is more than in I therefore I is more stable than II.