1.
The correct order of increasing boiling points for the following compounds:

(i) CH3Br\text{CH}_3\text{Br} (bromomethane)

(ii) CBr4\text{CBr}_4 (tetrabromomethane)

(iii) CH2ClBr\text{CH}_2\text{ClBr} (bromochloromethane)

(iv) CH2Br2\text{CH}_2\text{Br}_2 (dibromomethane)
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