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Standard XII

Chemistry

Huckel's Rule of Aromaticity

Assertion :Tr...

Question

Assertion :Tropylium cation is aromatic in nature. (refer image)
Reason: The only property that determines its aromatic behavior is its planar structure.

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 and Reason is correct.

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Solution

The correct option is C Assertion is correct but Reason is incorrect.

Tropylium cation is aromatic in nature. This is not only because of its planar property, but also because it has 6 π-electrons (4n+2, where n=1), which fulfills Huckel's rule of aromaticity.
So answer is C.

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Similar questions

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Assertion (A) Order and molecularity are same.

Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

Statement-1 : In (cyclobutadiene) all C-C bond lengths are equal.

Statement-2 : Cyclobutadiene is aromatic and the

Π

orbitals are orthogonal to each other.

The Assertion and Reason are given, you are required to choose any one of the following four responses.

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

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

C) The Assertion is correct but Reason is incorrect

D) Both Assertion and Reason are incorrect

Assertion (A) All collision of reactant molecules lead to product formation.

Reason (R) Only those collisions in which molecules have correct orientation and sufficient kinetic energy lead to compound formation.

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Assertion :Tropylium cation is aromatic in nature. (refer image) Reason: The only property that determines its aromatic behavior is its planar structure.

The correct option is C Assertion is correct but Reason is incorrect.Tropylium cation is aromatic in nature. This is not only because of its planar property, but also because it has 6 π-electrons (4n+2, where n=1), which fulfills Huckel's rule of aromaticity.So answer is C.

Assertion :Tropylium cation is aromatic in nature. (refer image)
Reason: The only property that determines its aromatic behavior is its planar structure.

The correct option is C Assertion is correct but Reason is incorrect.

Tropylium cation is aromatic in nature. This is not only because of its planar property, but also because it has 6 π-electrons (4n+2, where n=1), which fulfills Huckel's rule of aromaticity.
So answer is C.