How many of the following ionic compounds have coordination number of either cation or anion equal to 6 or more :
`ZnS, KCl, K_2O, CsBr, NaBr,CaF_2`

Explanation

To determine how many of the given ionic compounds have a coordination number of either the cation or anion equal to 6 or more, we will analyze each compound one by one.

### Step-by-Step Solution:

1. **ZnS**:
- In ZnS, the cation is Zn²⁺ and the anion is S²⁻.
- The coordination number for both Zn²⁺ and S²⁻ is 4.
- **Conclusion**: Coordination number is not 6 or more.

2. **KCl**:
- In KCl, the cation is K⁺ and the anion is Cl⁻.
- The coordination number for both K⁺ and Cl⁻ is 6.
- **Conclusion**: Coordination number is equal to 6.

3. **K₂O**:
- In K₂O, the cation is K⁺ and the anion is O²⁻.
- The coordination number for K⁺ is 4 and for O²⁻ is 8.
- **Conclusion**: Coordination number is 8 (for O²⁻).

4. **CsBr**:
- In CsBr, the cation is Cs⁺ and the anion is Br⁻.
- The coordination number for both Cs⁺ and Br⁻ is 8.
- **Conclusion**: Coordination number is 8.

5. **NaBr**:
- In NaBr, the cation is Na⁺ and the anion is Br⁻.
- The coordination number for both Na⁺ and Br⁻ is 6.
- **Conclusion**: Coordination number is equal to 6.

6. **CaF₂**:
- In CaF₂, the cation is Ca²⁺ and the anion is F⁻.
- The coordination number for Ca²⁺ is 8 and for F⁻ is 4.
- **Conclusion**: Coordination number is 8 (for Ca²⁺).

### Summary of Coordination Numbers:
- ZnS: 4 (not counted)
- KCl: 6 (counted)
- K₂O: 8 (counted)
- CsBr: 8 (counted)
- NaBr: 6 (counted)
- CaF₂: 8 (counted)

### Total Count:
The total number of ionic compounds with a coordination number of either cation or anion equal to 6 or more is **5**.

### Final Answer:
**5**

---