Amongst peracids of halogens, the strongest oxidising agent is............ .

Explanation

To determine the strongest oxidizing agent among the peracids of halogens, we can follow these steps:

### Step 1: Understand Peracids
Peracids are oxyacids that contain a higher oxidation state of the central atom. For halogens, the peracids include perfluoric acid (HOF4), perbromic acid (HBrO4), and perchloric acid (HClO4).

### Step 2: Identify the Peracids of Halogens
The peracids of halogens include:
- Perchloric acid (HClO4)
...