Assertion Boiling point of halogen acids are in the order `HF gtHBr gt HCI gt HI`
Reasoning Electronegativities are in the order `F gt CI gt Br gt I` .

Options

A. If both `(A)` and `(R )` are correct and `(R )` is the correct explanation of `(A)`
B. If both `(A)` and `(R )` are correct and `(R )` is the correct explanation of `(A)`
C. If `(A)` is correct but `(R )` is incorrect
D. If `(A)` is incorrect but `(R )` is correct

Answer

D

Explanation

Boiling point `HF gtHI gt HBr gt HCI HF` has the highest boiling point Consider van der Waals forces of attraction from `HCI` to `HI` Therefore `HF` is liquid and others are gases at room temperature .