The correct roder o fincreasing `C-O` bond lengths in `CO, CO_3^(2-)` and ` CO_2` is :

Options

A. `CO_3^(2-) gt CO_2 gt CO`
B. `CO_2 gt CO_3^(2-) gt CO`
C. `CO gt CO_3^(2-) gt CO_2`
D. `CO gt CO_2 gt CO_3^(2-)`

Answer

D

Explanation

Bond order for` CO,CO_2` and `CO_3^(2-)` are `3,2` and `1.33` . Higher is bond order lesser in bond length. Also `C` is `CO_3^(2-)` is ` sp^2`-hybridsed , in ` CO_2` sp-hybridized . Thus more is s-character , more is overlapping shorter will be bond .