Predict the relative acidic strength among the following:
  `HI, HIO_(4), ICI`

Explanation

To predict the relative acidic strength among the compounds HI, HIO₄, and ICl, we will analyze their ability to donate protons (H⁺) and the stability of their corresponding conjugate bases.

### Step-by-Step Solution:

1. **Identify the Compounds**: We have three compounds to compare: HI, HIO₄, and ICl.

2. **Understand Acidic Strength**: The acidic strength of a compound is determined by its ability to donate a proton (H⁺). The more stable the conjugate base formed after the donation of H⁺, the stronger the acid.

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