$A s s e r t i o n (A)$ : In $B r F_{3}$ oxidation state of $F$ is $+ 3$ .
Reason (R): Electronegativity of $F$ is more than that of bromine.

A and R are true, R is correct explanation of A

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A and R are true, R is not correct explanation of A

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A is true, but R is false

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A is false, but R is true

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Solution

The correct option is D A is false, but R is true
Assertion is false.

Oxidation of F is always -1

Electronegativity decreases down the group, so reason is correct.

Option D is correct.

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Assertion(A): In BrF3 oxidation state of F is +3.Reason (R): Electronegativity of F is more than that of bromine.

The correct option is D A is false, but R is trueAssertion is false.Oxidation of F is always -1 Electronegativity decreases down the group, so reason is correct.Option D is correct.

$A s s e r t i o n (A)$ : In $B r F_{3}$ oxidation state of $F$ is $+ 3$ .
Reason (R): Electronegativity of $F$ is more than that of bromine.

The correct option is D A is false, but R is true
Assertion is false.

Oxidation of F is always -1

Electronegativity decreases down the group, so reason is correct.

Option D is correct.