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

Enthalpy

CH3 O - CH = ...

Question

$C H_{3} O - C H = C H - N O_{2}$ $I$
$C H_{2} = C H - N O_{2}$ $I I$
$C H_{2} = C H - C l$ $I I I$
$C H_{2} = C H_{2}$ $I V$

Which of the following is the correct order of $C = C$ bond lengths among these compounds?

I > I I > I I I > I V

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

I V > I I I > I I > I

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

I > I I I > I I > I V

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

I I > I I I > I > I V

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

Open in App

Solution

The correct option is D $I > I I > I I I > I V$
Ethylene contains carbon-carbon double bond.
In vinyl chloride, the lone pair of chlorine is in resonance with carbon-carbon double bonds. This reduces the bond order of the carbon-carbon double bond.
In vinyl nitrite, the strong electron-withdrawing nitro group reduces the electron density of carbon-carbon double bond and further reduces the bond order of carbon-carbon double bond.
In compound (I) due to the resonance of lone pair of oxygen with carbon-carbon double bond and the electron-withdrawing effect of the nitro group, the bond order is further reduced.
Hence, the correct order of carbon-carbon bond lengths is $I > I I > I I I > I V$ .

Suggest Corrections

Similar questions

Q. The length of the carbon-carbon single bond of the compounds

C H_{2} = C H - C \equiv C H

II)

C H \equiv C - C \equiv C H

III)

C H_{3} - C H = C H_{2}

IV)

C H_{2} = C H - C H = C H_{2}

is expected to decrease in the order :

The priority sequence of the following substituent according to E-Z system of nomenclature is?

-C≡CH; -C (CH₃)₃; -CH= CH₂; -CH(CH₃)₂

I II III IV

Arrange the following: $C H_{3} C H_{2} C H_{2} C l (I), C H_{3} C H_{2} C H C l C H_{3} (I I) {(C H_{3})}_{2} C H C H_{2} C l (I I I) a n d {(C H_{3})}_{3} C - C l (I V)$ in order of decreasing tendency towards $S N^{2}$ reaction

Q. Give the decreasing order of hyperconjugative effect of R in

R - C H = C H_{2},

where R is:
I.

M e

II.

E t

III.

M e_{2} C H

IV.

M e_{3} C

Q. Give the decreasing order of hyperconjugative effect of

^{'} R^{'}

R - C H = C H_{2}

, where

^{'} R^{'}

is:
I.

M e -

II.

E t -

III.

M e_{2} C H -

IV.

M e_{3} C -

Join BYJU'S Learning Program

$C H_{3} O - C H = C H - N O_{2}$	$I$
$C H_{2} = C H - N O_{2}$	$I I$
$C H_{2} = C H - C l$	$I I I$
$C H_{2} = C H_{2}$	$I V$

CH3O−CH=CH−NO2 ICH2=CH−NO2IICH2=CH−ClIIICH2=CH2IVWhich of the following is the correct order of C=C bond lengths among these compounds?

$C H_{3} O - C H = C H - N O_{2}$ $I$
$C H_{2} = C H - N O_{2}$ $I I$
$C H_{2} = C H - C l$ $I I I$
$C H_{2} = C H_{2}$ $I V$

Which of the following is the correct order of $C = C$ bond lengths among these compounds?