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

Explanation

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

### Step 1: Understand the Group of Elements
The formula \( R_2O_5 \) suggests that the element \( R \) belongs to a specific group in the periodic table. The elements that typically form oxides with the formula \( R_2O_5 \) are from Group 15 (the nitrogen family).

**Hint**: Look for elements in Group 15 of the periodic table.

### Step 2: Identify the Metalloids in Group 15
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