(II) and (III) compound almost have same boiling point. In the given options.
As the dipole moment increases. boiling point also increases.

JEE Main 2020 — Chemistry Inorganic Chemistry
The increasing order of boiling points of the following compounds is :

Held on 5 Sept 2020 · Verified 6 Jul 2026.
I < III < IV < II
I < IV < II< III
IV < I < II < III
III < I < II < IV
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