`H_(3)PO_(3)` is diprotic (or dibasic). Why ?
Or What is the basicity of `H_(3)PO_(3)` and why ?
Or Draw the structure of dibasic oxoacid of phosphour.

Explanation

To determine why \( H_3PO_3 \) is diprotic (or dibasic), we need to analyze its structure and the number of hydrogen ions (\( H^+ \)) it can donate.

### Step-by-Step Solution:

1. **Understanding the Structure of \( H_3PO_3 \)**:
- \( H_3PO_3 \) is known as phosphorous acid. Its structure can be represented as:
\[
\text{H}_3\text{PO}_3: \text{O}=\text{P}(\text{OH})_2\text{H}
...