Give correct order of boiling point of hydride of group 17.

Explanation

To determine the correct order of boiling points of the hydrides of Group 17 (the halogens), we will analyze the hydrides: HF, HCl, HBr, and HI.

### Step-by-Step Solution:

1. **Identify the Hydrides**: The hydrides of Group 17 are HF (hydrogen fluoride), HCl (hydrogen chloride), HBr (hydrogen bromide), and HI (hydrogen iodide).

2. **General Trend in Boiling Points**: Generally, for the hydrides of a group in the periodic table, the boiling points increase as you move down the group. This is due to the increase in molecular size and mass, which leads to stronger van der Waals forces.

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