Which has highest melting point chlorobenzene ortho dichlorobenzene meta dichlorobenzene para dichlorobenzene?

p-Dichlorobenzene fits closely in the crystal lattice due to its symmetrical structure. Therefore, it has highest melting point.

Which has higher melting point ortho or meta?

o>m>p.

Why boiling point of para dichlorobenzene is more than meta dichlorobenzene?

Due to symmetry, para-dichlorobenzene fits closely in the crystal lattice. As a result, intermolecular forces of attraction are stronger and therefore, greater energy is required to break its lattice and its melts at higher temperature.

What is the correct order of boiling temperatures for the hydrogen halides from the lowest to highest?

We can conclude, the order of boiling point followed is HF > HI > HBr > HCl.

Why Ortho has high boiling point?

O-Dichlorobenzene has a bit higher boiling point due to Resonance and inductive effects which are slightly lower in para and resonance absent in meta.

Why does para have a higher melting point than Ortho?

Generally, the melting point of para-isomer is quite higher than that of ortho- or meta-isomers. This is due to the fact that it has a symmetrical structure and therefore, its molecules can easily pack closely in the crystal lattice.

Why boiling point values of p-dichlorobenzene possess higher values than corresponding meta and ortho derivatives?

(a) p-dichlorobenzene have higher melting point than ortho and meta isomer. This is because the para isomer is higher a symmetrical structure and therefore, its packing is more efficient as compared to the ortho and meta isomer, therefore, it shows higher melting point.

Which among the compound has high melting point 1/3 dichlorobenzene or 1/4 dichlorobenzene give reason?

p-Dichlorobenzene (or 1,4-dichlorobenzene) has the highest melting point among its ortho and meta isomers. This is because it fits better in its crystal lattice than the other two isomers owing to its symmetry.