a. O3
O → Group 6A → 6 val. e- x 3
The electrons in the double bond (O=O) can move to the other O-O bond.
O3 exhibits resonance.
b. CNO-
C → Group 4A → 4 val. e-
N → Group 5A → 5 val. e-
O → Group 6A → 6 val. e-
- charge → +1 electron
The electrons in the double bonds can move about while maintaining the overall charge of the ion equal to -1.
CNO- exhibits resonance.
c. AsI3
As → Group 5A → 5 val. e-
I → Group 7A → 7 val. e- x 3
ideal structure → no pi electrons that can move about
AsI3 do not exhibit resonance.
d. CO32-
Which of the following compounds or ions exhibit resonance?
a. O3
b. CNO-
c. AsI3
d. CO32-
e. AsF3
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