A certain element is a metalloid that forms an acidic oxide with the formula `R_(2)O_(5)`. Identify the element.

Explanation

To identify the metalloid that forms an acidic oxide with the formula \( R_2O_5 \), we can follow these steps:

### Step 1: Understand the Characteristics of Metalloids
Metalloids are elements that have properties intermediate between metals and non-metals. In the periodic table, metalloids are typically found in groups 13 to 16.

**Hint:** Remember that metalloids can form both acidic and basic oxides depending on their position in the periodic table.

### Step 2: Identify the Relevant Group
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