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| 1. |
Explain the formula of calcium oxide in terms of the configuration of calcium and oxygen. |
| Answer» Solution :Calcium (Z=20) has `1s^(2)2s^(2)2P^(6)3s^(2)3P^(6)4S^(2)` configuration. It loses two ELECTRONS to forms `Ca^(+2)` ion. OXYGEN atom gains both of these electorons to form oxide ion `O^(2-)`. Therefore, the formula of calcium oxide is `Ca^(2+)O^(2-)`. | |