Find out the oxidation state of sodium in `Na_(2)O_(2)`.

Explanation

To find the oxidation state of sodium in the compound \( \text{Na}_2\text{O}_2 \), we can follow these steps:

### Step 1: Identify the components of the compound
The compound \( \text{Na}_2\text{O}_2 \) consists of sodium (Na) and oxygen (O).

### Step 2: Recognize the oxidation state of oxygen
In peroxides, the oxidation state of oxygen is typically -1. Since \( \text{Na}_2\text{O}_2 \) is a peroxide, we can assign the oxidation state of oxygen as -1.

...