Which of the following correctly represents the Lewis dot structure of the CO molecule?
| 1. | |
| 2. | |
| 3. | |
| 4. | 
Correct Lewis structure of the nitrite ion, \(NO_{2}^{-}\) among the following is:
| 1. | 2. | ||
| 3. | 4. | None of the above | 
Which of the following represents the correct resonance structure of the carbonate ion ( \(CO_{3}^{2-}\))?
| 1. |  | 2. |  | 
| 3. |  | 4. |  |