Give the decreasing order of the acidic properties of oxides.
a. `ZnO` , b. `KO_(2)` , c. `P_(2)O_(5)` , d. `MgO`

Explanation

To determine the decreasing order of the acidic properties of the given oxides: ZnO, KO₂, P₂O₅, and MgO, we can analyze their acidic characteristics based on their positions in the periodic table and their chemical nature.

### Step-by-Step Solution:

1. **Identify the Oxides:**
- We have four oxides:
- a. ZnO (Zinc oxide)
- b. KO₂ (Potassium superoxide)
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