Which non-metal is used to disinfect water?

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a non-metal that is used to disinfect water. This means we need to identify a non-metal element that has properties suitable for killing germs and pathogens in water.

2. **Identifying Non-Metals**: Non-metals are elements that lack the characteristics of metals. They are usually poor conductors of heat and electricity and can be found in various states (solid, liquid, gas) at room temperature.

3. **Researching Disinfectants**: Disinfectants are substances used to kill or inhibit the growth of harmful microorganisms. Common disinfectants include chlorine, iodine, and ozone. Among these, we need to focus on non-metals.

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