Which one of the following has the highest boiling point ?
1. CH3CH2F
2. CH3CH2CL
3. CH3CH2I
4. CH3CH2BR
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Answer:
Correct option is 3. CH3CH2I
Explanation:
Above given are the Haloalkanes.
Molecular weight of halogens are decreases from I ,Br , Cl , F .
Highest molecular weight has more electrons which can able to create more temporary bonds with other molecules.
The more bond the more energy is needed to break the bond.
More energy required to break bond , High is the boiling point.
Iodine have higher molecular weight among all Haloalkanes hence it has high boiling point .
order of boiling point is:
1>2>4>3.
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