Identify the incorrect statement among the following

Options

A. Ozone reacts with `SO_(2)` to give `SO_(3)`
B. Silicon reacts with `NaOH_((aq))` in the presence of air to give `Na_(2)SiO_(3)` and `H_(2)O`
C. `Cl_(2)` reacts with excess of `NH_(3)` to give `N_(2)` and HCl
D. `Br_(2)` react with hot and strong NaOH solution to give NaBr,`NaBrO_(4)` and `H_(2)O`

Explanation

To solve the question of identifying the incorrect statement among the given options, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Analyze the First Statement:**
- **Statement:** Ozone reacts with SO2 to give SO3.
- **Reaction:** O3 + SO2 → 2SO3.
- **Conclusion:** This statement is correct because ozone does react with sulfur dioxide to produce sulfur trioxide.

2. **Analyze the Second Statement:**
- **Statement:** Silicon reacts with NaOH in the presence of air to give Na2SiO3 and H2O.
- **Reaction:** Si + 2NaOH + H2O → Na2SiO3 + H2.
- **Conclusion:** This statement is also correct as silicon reacts with sodium hydroxide to produce sodium silicate and water.

3. **Analyze the Third Statement:**
- **Statement:** When Cl2 reacts with excess NH3, it gives Na2 and HCl.
- **Reaction:** 3Cl2 + 8NH3 → 6HCl + N2 + 2NH4Cl.
- **Conclusion:** This statement is incorrect because the products are nitrogen gas (N2) and hydrochloric acid (HCl), not Na2.

4. **Analyze the Fourth Statement:**
- **Statement:** Br2 reacts with hot and strong NaOH solution to give NaBr and NaBrO4 and H2O.
- **Reaction:** 3Br2 + 6NaOH → 5NaBr + NaBrO3 + 3H2O.
- **Conclusion:** This statement is incorrect because the products include NaBr and NaBrO3, not NaBrO4.

### Final Conclusion:
The incorrect statements are the third and fourth statements. However, since we need to identify only one incorrect statement, the third statement is the most clearly incorrect as it does not relate to the correct products of the reaction.

### Answer:
The incorrect statement is: "When Cl2 reacts with excess of NH3, it gives Na2 and HCl."