Question

The correct order of increasing bond length of C-H, C-O, C-C and C=C is (please explain)​

Answer 1

Explanation:

The correct bond order is :

C−H<C=C<C−O<C−C

Due to small size of the atoms & large electro-negativity difference between C & H, C-H bond length is the shortest.

Single bonds are longer than double bonds.

Therefore, the C-O bond is longer than C=C bond. And due to electro-negativity difference between C & O, C-O has a shorter bond length than C-C.