1.

The progressive increase in the boilingpoints from CH_(3)Cl(249 K), CH_(3)Br (277 K) and CH_(3)I (316 K) is due to

Answer»

higher polarity of C - I bond and higher molar MASS
higher polarity of C - I bond and lower molar mass
lower polarity but higher molar mass in `CH_(3)I`
lower polarity and lower molar mass in `CH_(3)I`

SOLUTION :The boiling point of `CH_(3)I` is higher than `CH_(3)Cl` and `CH_(3)Br` because of higher molar mass yet it has low polarity of C - I bond.


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