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Bot GPT 4-o mini The ionic compound CaO is composed of the following pairs of ions:
- **1 Ca²⁺ ion and 1 O²⁻ ion**
Calcium (Ca) typically forms a 2+ charge when it loses two electrons, resulting in the Ca²⁺ ion. Oxygen (O), on the other hand, typically forms a 2− charge when it gains two electrons, resulting in the O²⁻ ion. Therefore, the correct answer is:
- **1 Ca²⁺ ion and 1 O²⁻ ion**