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Standard XII

Chemistry

Structure of Carbocation

Assertion :Th...

Question

Assertion :The bond angle in $B F_{3}$ is smaller than that in $B F_{4}^{-}$ . Reason: $B F_{3}$ has $s p^{2} -$ hybridisation, whereas $B F_{4}^{-}$ has $s p^{3} -$ hybridisation.

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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Assertion is incorrect but Reason is correct

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Solution

The correct option is D Assertion is incorrect but Reason is correct
$B F_{3}$ has angle $120^{0}$ while $B F_{4}^{-}$ has around $109^{0}$ angle.
Also it can be seen from structure that $B F_{3}$ has $s p^{2} -$ hybridisation, whereas $B F_{4}^{-}$ has $s p^{3} -$ hybridisation.

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Similar questions

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Assertion (A) Bond angle in ethers is slightly less than the tetrahedral angle.
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(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
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(d) Assertion is wrong statement but reason is correct statement.
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Assertion :The bond angle in BF3 is smaller than that in BF4−. Reason: BF3 has sp2− hybridisation, whereas BF4− has sp3− hybridisation.

The correct option is D Assertion is incorrect but Reason is correctBF3 has angle 1200 while BF−4 has around 1090 angle.Also it can be seen from structure that BF3 has sp2− hybridisation, whereas BF4− has sp3− hybridisation.

Assertion :The bond angle in $B F_{3}$ is smaller than that in $B F_{4}^{-}$ . Reason: $B F_{3}$ has $s p^{2} -$ hybridisation, whereas $B F_{4}^{-}$ has $s p^{3} -$ hybridisation.

The correct option is D Assertion is incorrect but Reason is correct
$B F_{3}$ has angle $120^{0}$ while $B F_{4}^{-}$ has around $109^{0}$ angle.
Also it can be seen from structure that $B F_{3}$ has $s p^{2} -$ hybridisation, whereas $B F_{4}^{-}$ has $s p^{3} -$ hybridisation.