Which of the following has the shortest C-C bond?
- benzene
- ethane
- diamond
- acetylene
Explanation
Acetylene has a triple bond between two adjacent carbon atom
And the bond length is even shorter.
it is closer to 120 pm
Each carbon atom in a diamond is surrounded by 4 other carbon atoms.
And connected to them by a strong single covalent bond- the strongest type of chemical bond.
The bond length is 154 pm.
Hence the shortest C - Bond distance is found in acetylene which is 120 pm.
Additional information:
Note that as the C-C bond length is shortening, the bond length of C-H is alose decreasing.
This is due to the presence of hyperconjugation in alkene and alyknes
Where each bond attains a partial double bond character.
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