| 1. | |
| i) |  |
| Al3+(NO3–)3 | |
| ii) |  |
| Li+OH– | |
| iii) |  |
| Ca2+O2- | |
| iv) |  |
| (K+)2SO42- | |
| v) |  |
| Cs+OH– | |
| vi) |  |
| Pb2+O2- | |
| 2. | |
   |
|
| 3. | |
   |
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