Assertion :The bond angle of $P B r_{3}$ is greater than that of $P H_{3}$ , but bond angle of $N B r_{3}$ is less than that of $N H_{3}$ . Reason: Electronegativity of phosphorus atom is less than that of nitrogen.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
$P$ atom is less electronegative than nitrogen.
In case of phosphorus, $P B r_{3}$ has longer bond length than $P H_{3}$ but in case of nitroge, $N B r_{3}$ has smaller bond length than ammonia.
Thus, both the statemnts are correct but statment 2 is not the correct explanation of the statement 1

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Similar questions

Q. Assertion :The bond angle of

P {B r}_{3}

is greater than

{P H}_{3}

but the bond angle of

N {B r}_{3}

is lesser than

{N H}_{3}

. Reason: Electronegativity of

P

-atom is less than that of

N

-atom.

Assertion (A) Bond angle in ethers is slightly less than the tetrahedral angle.
Reason (R) There is a repulsion between the two bulky (- R) groups.
(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.

Q. Read the assertion and reason carefully to mark the correct option out of the options given below:
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.
(c) If assertion is true but reason is false.
(d) If assertion and reason both are false.

Assertion : HOF bond angle is greater than HOCl bond angle.
Reason : Oxygen is more electronegative than halogens

Q. Assertion
If BOD level of water in reservoir is less than 5 ppm it is not polluted.

Reason
High biological oxygen demand means low activity of bacteria in water.

Assertion (A) o-nitrophenol is less soluble in water than the m- and p-isomers.
Reason (R) m and p-nitrophenols exist as associated molecules.
(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 :The bond angle of PBr3 is greater than that of PH3, but bond angle of NBr3 is less than that of NH3. Reason: Electronegativity of phosphorus atom is less than that of nitrogen.

Assertion :The bond angle of $P B r_{3}$ is greater than that of $P H_{3}$ , but bond angle of $N B r_{3}$ is less than that of $N H_{3}$ . Reason: Electronegativity of phosphorus atom is less than that of nitrogen.