MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Huckel's Rule of Aromaticity

Which of the ...

Question

Which of the following signifies an aromatic compound?

A

reasonably planar structure

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

4n

+

2 pi electrons

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

unusual stability due to delocalisation of pi electrons

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

All of the above

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is A All of the above
All of the following signifies an aromatic compound.
(A) Reasonably planar structure
(B) 4n $+$ 2 pi electrons
(C) unusual stability due to delocalisation of pi electrons

Suggest Corrections

thumbs-up

0

Similar questions

Q. Why is delocalisation of pi electrons necessary for a compound to be aromatic? What is its significance?

Q. Cyclic planar compounds with a conjugated system of 4n

π

electrons is aromatic.

Q. On the basis of molecular orbital treatment of various aromatic compounds, it has been observed that an aromatic compound must fulfill the following theoretical requirements. a) It must have an uninterrupted cyclic cloud of

π

-electrons above and below the plane of the molecule ( often called as

π

- cloud). Let us look what does this mean?
i) For the

π

-cloud to be cyclic, the molecule must be cyclic
ii) For the

π

-cloud to be uninterrupted, every atom in the ring must have a p- orbital
iii) For the

π

-cloud to be formed, each p-orbital must be able to overlap with the

p -

orbitals on either side of it. Therefore, the
molecule must be planar. b) The

π

-cloud must contain an odd number of pair of

π

(4 n + 2) π

-electrons, where n is an integer. The stability order of the three compounds is:

Q. A given compound satisfies one or more of the following criteria.
(A) No pi electrons are present.
(B) Pi electrons are not delocalised.
(C) The compound has non-planar structure.
What can be said about this compound?

Q. Resonance involves
(a) migration of an H atom
(b) delocalisation of

σ

electrons
(c) delocalisation of

π

- electrons
(d) migration of alkyl group
The correct answer is

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Classification of Organic Compounds

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Huckel's Rule of Aromaticity

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon