Name the following:
A non-metal which is gaseous at room temperature.

Explanation

To answer the question "Name a non-metal which is gaseous at room temperature," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify a non-metal that exists in a gaseous state at room temperature.

2. **Identify Non-Metals**: Recall that non-metals are elements that typically do not exhibit metallic properties. Examples of non-metals include hydrogen, oxygen, nitrogen, and noble gases like xenon and radon.

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