Assertion: Empirical and molecular formula of `Na_2CO_3` is same.
Reason: `Na_2CO_3`does not form hydrate.

Options

A. Assertion and reason both are correct statements and reason is correct explanation for assertion.
B. Assertion and reason both are correct statements but reason is not correct explanation for assertion.
C. Assertion is correct statements but reason is wrong statement.
D. Assertion is wrong statement but reason is correct statement.

Answer

To solve the question, we need to analyze both the assertion and the reason provided.

### Step 1: Understand the Assertion
The assertion states that the empirical and molecular formula of \( \text{Na}_2\text{CO}_3 \) is the same.

- **Empirical Formula**: This represents the simplest whole-number ratio of the elements in a compound.
- **Molecular Formula**: This shows the actual number of atoms of each element in a molecule of the compound.

For \( \text{Na}_2\text{CO}_3 \):
- The molecular formula is \( \text{Na}_2\text{CO}_3 \) which indicates:
- 2 Sodium (Na) atoms
- 1 Carbon (C) atom
- 3 Oxygen (O) atoms

To find the empirical formula, we look at the ratio of the elements:
- Sodium: 2
- Carbon: 1
- Oxygen: 3

The ratio \( 2:1:3 \) cannot be simplified further. Therefore, the empirical formula is also \( \text{Na}_2\text{CO}_3 \).

**Conclusion**: The assertion is **true**.

### Step 2: Understand the Reason
The reason states that \( \text{Na}_2\text{CO}_3 \) does not form hydrate.

- A hydrate is a compound that contains water molecules within its structure.
- However, \( \text{Na}_2\text{CO}_3 \) can form hydrates, the most common being \( \text{Na}_2\text{CO}_3 \cdot 10\text{H}_2\text{O} \) (sodium carbonate decahydrate).

**Conclusion**: The reason is **false**.

### Final Conclusion
Since the assertion is true and the reason is false, the correct option is that the assertion is correct, but the reason is incorrect.

### Answer
**Assertion is true; Reason is false.**