Question

Which bond is short C=0, or N = O? Why?
​

Answer 1

Answer:

In CO,C−O bond gets triple bond character in one of the resonating structures. So it has shortest bond length of C−O bond. But in A C−O has single bond character. In B, C−O bond has double character. In D, C−O bonds have bond length greater than double bond but less than single C−O bond.

Answer 2

Answer:

C=O

Explanation:

In CO ,C - O bond gets triple bond character in one of the resonating structures. So it has shortest bond length of C - O bond.