Assertion (A) Phenol forms 2, 4, 6-tribromophenol on treatment with $B r_{2}$ in carbon disulphide at 273K.
Reason (R) Bromine polarises in carbon disulphide.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

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Assertion :Fluorine combines with sulphur to form SF6 but no other halogen forms hexahalide with sulphur. Reason: The reactivity of halogens increases as the atomic number increases.

The correct option is C Assertion is correct but Reason is incorrectThe reactivity of halogens decreases down the group as F2>Cl2>Br2>I2 (Reactivity).Due to its high reactivity, Fluorine reacts with sulphur to form SF6.S+3F2⟶SF6Other halogens are inactive with Sulphur.

Assertion :Fluorine combines with sulphur to form $S F_{6}$ but no other halogen forms hexahalide with sulphur. Reason: The reactivity of halogens increases as the atomic number increases.