Which of the following correct statement for the given acids?

Options

A. Phosphinic acid is diprotic acid while phosphonic acid is a monoprotic acid
B. Phosphininc acid is a monoprotic acid while phosphonic acid is a diprotic acid
C. Both are diprotic acid
D. Both are tripotic acid

Explanation

To solve the question regarding the correct statements for phosphonic and phosphorous acids, let's break down the information step by step.

### Step 1: Identify the Acids
The two acids we are discussing are:
1. Phosphonic Acid (H3PO3)
2. Phosphorous Acid (H3PO2)

### Step 2: Understand the Structure
- **Phosphonic Acid (H3PO3)**:
- It has a phosphorus atom bonded to three oxygen atoms, with two of those oxygens being part of hydroxyl (OH) groups.
- Structure:
```
O
||
H - P - OH
|
OH
```
- It is classified as a diprotic acid because it can donate two protons (H⁺ ions).

- **Phosphorous Acid (H3PO2)**:
- It has a phosphorus atom bonded to two oxygen atoms, with one being part of a hydroxyl group and one being a double bond.
- Structure:
```
O
||
H - P - OH
|
H
```
- It is classified as a monoprotic acid because it can donate only one proton (H⁺ ion).

### Step 3: Classify the Acids
- **Phosphonic Acid (H3PO3)**:
- Diprotic (can donate 2 protons)

- **Phosphorous Acid (H3PO2)**:
- Monoprotic (can donate 1 proton)

### Step 4: Analyze the Statements
Now, let's analyze the statements given in the question:
1. Phosphonic Acid is monoprotic.
2. Phosphorous Acid is diprotic.
3. Both are diprotic.
4. Both are monoprotic.

From our classification:
- Statement 1 is **incorrect** (Phosphonic Acid is diprotic).
- Statement 2 is **incorrect** (Phosphorous Acid is monoprotic).
- Statement 3 is **incorrect** (Both are not diprotic).
- Statement 4 is **incorrect** (Both are not monoprotic).

### Conclusion
The only correct statement is that:
- Phosphonic Acid is diprotic.
- Phosphorous Acid is monoprotic.

Thus, the answer to the question is that the correct statement is that Phosphonic Acid is diprotic, and Phosphorous Acid is monoprotic.