Question

Among the species `CO_2, CO_3^(2-), CH_3COO^(-)`, CO, HCHO which has longest carbon-oxygen bond
A. `CO_(2)`
B. `CH_(3)COO^(-)`
C. HCHO
D. `CO_(3)^(2-)`

Answer 1

Correct Answer - D
Among the given spcies. The bond dissociation energy of C-O bond is minimum in case of `CO_(3)^(2-)` by which C-O bond become more weaker in `CO_(3)^(2-)` or the bond order of `CO_(3)^(2-)` (1.33) minimum so the bond become weaker.