How do you know which isomer has a higher boiling point?

Which of the following isomers has the highest boiling temperature?

Correct option is (c) 1,4 dichlorobenzene

The melting points of this isomer will be high due to its symmetric structure and it will form most stable arrangement or we can say a good packing by these molecules can be formed.

Which isomer has higher melting point?

para-isomers
The para-isomers have higher melting point as compared to their ortho and meta-isomers.

Which has the highest boiling point?

Xenon has the highest boiling point.

Thus, Van der Waal’s forces between the molecules are stronger, and the melting and boiling points are greater down the group.

Does symmetry increase boiling point?

Also, stronger intermolecular interactions presume higher boiling and melting point. However, for the melting point, you need to also consider the factor of symmetry. More symmetry means tighter packing in the solid phases and therefore, a higher melting point.

Do alcohols or ethers have higher boiling points?

Alcohols have higher boiling points than do ethers and alkanes of similar molar masses because the OH group allows alcohol molecules to engage in hydrogen bonding.