The following are some statements about oxyacids of VA group elements
i) The salt of nitric acid contains `NO_(3)^(-)` ion
ii) The salt of phosphoric acid contains `PO_(4)^(3-)` ion
iii) Salts of meta phosphoric acid contains `HPO_(3)^(2-)` ion The correct combination is

Options

A. All are correct
B. i, iii are correct
C. ii, iii are correct
D. i, ii are correct

Answer

To solve the question regarding the oxyacids of VA group elements and their corresponding salts, we will analyze each statement step by step.

### Step 1: Analyze the first statement
**Statement:** The salt of nitric acid contains `NO3^(-)` ion.

**Explanation:**
- Nitric acid (HNO3) is a strong acid that dissociates in water to produce one hydrogen ion (H⁺) and one nitrate ion (NO3⁻).
- Therefore, when nitric acid reacts with a base (like sodium hydroxide), it forms sodium nitrate (NaNO3) and water (H2O).
- The resulting salt, sodium nitrate, contains the nitrate ion (NO3⁻).

**Conclusion:** The first statement is correct.

### Step 2: Analyze the second statement
**Statement:** The salt of phosphoric acid contains `PO4^(3-)` ion.

**Explanation:**
- Phosphoric acid (H3PO4) is a triprotic acid, meaning it can donate three protons (H⁺).
- When it reacts with a base, it can form a salt such as sodium phosphate (Na3PO4).
- In solution, sodium phosphate dissociates into three sodium ions (Na⁺) and one phosphate ion (PO4³⁻).

**Conclusion:** The second statement is also correct.

### Step 3: Analyze the third statement
**Statement:** Salts of metaphosphoric acid contain `HPO3^(2-)` ion.

**Explanation:**
- Metaphosphoric acid (HPO3) can exist in various forms, including trimeric or polymeric forms.
- When metaphosphoric acid loses protons, it can form different ions, such as PO3²⁻ or P3O9³⁻, depending on the number of protons lost.
- However, the statement claims that salts contain the HPO3²⁻ ion, which is not typically the case. Instead, salts of metaphosphoric acid would generally contain PO3²⁻ ions or other forms, but not specifically HPO3²⁻.

**Conclusion:** The third statement is incorrect.

### Final Conclusion
Based on the analysis:
- Statement 1 is correct.
- Statement 2 is correct.
- Statement 3 is incorrect.

Thus, the correct combination of statements is **1 and 2**.