Question

Consider the following structures:

What is the relation between $x$ and $y$?

• A. $x=y$
• B. $x>y$
• C. $x<y$
• D. None is true

Answer 1

The correct option is B $x>y$


$x$ and $y$ represents the $C-O$ bond length. $x$ is greater than $y$ because in the later one, lone pair is delocalising over two carbonyl groups and thus is less available for either of one which makes $C-O$ bond length short.