Which of the following molecule has longest C - C bond length- A- CH 2- C - CH 2B- CH 3- CH - CH 2C- CH 3- C CH 32- CH - CH 2D- CH 3- C CH 3- CH 2

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

Physical Properties of Alkynes

Which of the ...

Question

Which of the following molecule has longest $C = C$ bond length?

C H_{2} = C = C H_{2}

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

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

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

C H_{3} - C (C H_{3})_{2} - C H = C H_{2}

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

C H_{3} - C (C H_{3}) = C H_{2}

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

Open in App

Solution

The correct option is D $C H_{3} - C (C H_{3}) = C H_{2}$
(a) Pure C = C (no hyperconjugation)
(b) 3 hyperconjgating structure
(c) No hyperconjugating strucutre
(d) 6 hyperconjugating structure
Compound given in (d) has maximum number of hyperconjugating contributor.
Hence, more the hyperconjugation, more will be the single bond character in $C = C$ and bond length will be longer.

Suggest Corrections

Similar questions

Q. Which of the following has a bond formed by overlap of

s p - s p^{3}

hybrid orbitals?

Q. The correct order of C - H bond length in

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

and

C H \equiv C H

is:

A straight chain hydrocarbon has the molecular formula C8H10. The hybridisation for the carbon atoms from one end of the chain to the other are respectively $s p^{3}, s p^{2}, s p^{2}, s p^{3}, s p^{2}, s p^{2}, s p$ and $s p$ . The structural formula of the hydrocarbon would be

C H_{3} - C H = C H_{2} + H B r \to

-------- the product is

Q. The correct order of C - H bond length in

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

and

C H \equiv C H

is:

Join BYJU'S Learning Program

Which of the following molecule has longest C=C bond length?

Which of the following molecule has longest $C = C$ bond length?