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  • Assertion (A): The boiling points of alkyl halides decrease in the order: RI > RBr > RCl > RF

In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question:

(i) Assertion and reason both are correct and reason is correct explanation of assertion.
(ii) Assertion and reason both are wrong statements.
(iii) Assertion is correct but reason is wrong statement.
(iv) Assertion is wrong but reason is correct statement.
(v) Assertion and reason both are correct statements but reason is not correct explanation of assertion.

Assertion (A): The boiling points of alkyl halides decrease in the order: RI > RBr > RCl > RF

Reason (R): The boiling points of alkyl chlorides, bromides and iodides are considerably higher than that of the hydrocarbon of comparable molecular mass.

Answers (1)

(v) The order of boiling point :

RI > RBr > RCl > RF

As the halides are polar molecules, therefore, their boiling temperature is always more than the boiling temperature of the hydrocarbons.

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