What are the groups known as ?
Group 17

Explanation

**Step-by-Step Solution:**

1. **Identify the Group**: Group 17 of the periodic table is the focus of the question.

2. **Name the Group**: Group 17 is commonly known as the "Halogens."

3. **List the Elements**: The elements that belong to Group 17 are:
- Fluorine (F)
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