MyQuestionIcon

4

You visited us 4 times! Enjoying our articles? Unlock Full Access!

Introduction to Aromatic Compounds

An aromatic c...

Question

An aromatic compounds among other things should have a $(4 n + 2)$ $π -$ electron cloud, where $n$ can't be:

A

\frac{1}{2}

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

B

3

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

C

2

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

D

1

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

Open in App

Solution

The correct option is A $\frac{1}{2}$
For any system to be aromatic, it must be planar, cyclic, contain conjugated $π$ electrons and it must follow Huckel's rule. According to Huckel's rule, if a cyclic, planar, conjugated molecule has $(4 n + 2) π$ electrons, it is aromatic.
where $n$ can only be positive integer $i . e . 0, 1, 2, 3...$ , it cannot be fractional or negative.

Suggest Corrections

thumbs-up

0

Similar questions

Q. An aromatic compounds among other things should have a

(4 n + 2)

π -

electron cloud, where

n

Q. An aromatic compounds among other things should have a

(4 n + 2)

π -

electron cloud containing

(4 n + 2)

electrons, where

n

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. On the basis of molecular orbital treatment of various aromatic compounds , it has been observed that an aromatic compound must fulfil 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 porbital 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 and odd number of pair of

π

(4 n + 2) π

- electrons, where n is an integer.
Cyclo- octatetraene is:

Q. An aromatic compound follows (4n+2)

π

rule, where n can not be

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Aromatic Compounds - Introduction

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Introduction to Aromatic Compounds

Standard XIII Chemistry

Join BYJU'S Learning Program

CrossIcon