Write the formula of oxide, superoxide and peroxide of caesium.

Explanation

To find the formulas for the oxide, superoxide, and peroxide of cesium, we can follow these steps:

### Step 1: Identify the oxidation state of cesium
Cesium (Cs) is an alkali metal from Group 1 of the periodic table. It has one valence electron in the 6s orbital, which means it typically loses that electron to achieve a stable electron configuration. Therefore, cesium has a +1 oxidation state.

### Step 2: Write the formula for cesium oxide
The oxide ion (O²⁻) has a charge of -2. To balance the +1 charge of cesium, we need two cesium ions for each oxide ion. Thus, the formula for cesium oxide is:
\[ \text{Cs}_2\text{O} \]
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