Comment on the physical state of group 17 elements.

Explanation

To comment on the physical state of group 17 elements, also known as the halogens, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Group**: Group 17 elements are known as the halogens. This group includes fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).

2. **Physical States at Room Temperature**:
- **Fluorine (F)**: This element is a gas at room temperature.
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