Answer
The compounds or ions that exhibit resonance are:
a. O3 (Ozone)
b. CNO- (Cyanate ion)
d. CO32- (Carbonate ion)
Work Step by Step
a. O3 (Ozone) exhibits resonance due to the delocalization of the π electrons in the molecule.
b. CNO- (Cyanate ion) exhibits resonance due to the delocalization of the π electrons between the carbon, nitrogen, and oxygen atoms.
d. CO32- (Carbonate ion) exhibits resonance due to the delocalization of the π electrons in the molecule.
The compounds or ions that do not exhibit resonance are:
c. AsI3 (Arsenic triiodide)
e. AsF3 (Arsenic trifluoride)
These compounds do not have delocalized π electrons, and therefore, they do not exhibit resonance.
