A: Total charge on `N_(A)` ions of `CO_(3)^(2-)` is `1.93 xx 10^(5)` coulomb.
R : Charge on one electron is 96500 coulomb.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion
C. If Assertion is true statement but Reason is false
D. If both Assertion and Reason are false statements

Answer

To solve the problem, we need to calculate the total charge on \( N_A \) ions of \( CO_3^{2-} \) and verify the given information.

### Step-by-Step Solution:

1. **Understanding the Charge on \( CO_3^{2-} \)**:
- The carbonate ion \( CO_3^{2-} \) has a total charge of \( -2 \). This means that each \( CO_3^{2-} \) ion carries a charge of \( -2e \), where \( e \) is the charge of a single electron.

2. **Charge of a Single Electron**:
- The charge of one electron is approximately \( 1.6 \times 10^{-19} \) coulombs.

3. **Calculating the Charge on One \( CO_3^{2-} \) Ion**:
- The total charge on one \( CO_3^{2-} \) ion can be calculated as:
\[ \text{Charge on one } CO_3^{2-} = -2e = -2 \times 1.6 \times 10^{-19} \text{ C} = -3.2 \times 10^{-19} \text{ C} \]
- However, for total charge calculations, we consider the magnitude:
\[ \text{Magnitude of charge} = 3.2 \times 10^{-19} \text{ C} \]

4. **Using Avogadro's Number**:
- Avogadro's number \( N_A \) is \( 6.022 \times 10^{23} \) ions/mol. To find the total charge on \( N_A \) ions of \( CO_3^{2-} \):
\[ \text{Total charge} = N_A \times \text{Charge on one } CO_3^{2-} \]
\[ \text{Total charge} = 6.022 \times 10^{23} \times 3.2 \times 10^{-19} \text{ C} \]

5. **Calculating the Total Charge**:
- Performing the multiplication:
\[ \text{Total charge} = 6.022 \times 3.2 \times 10^{4} \text{ C} = 1.927 \times 10^{5} \text{ C} \]
- Rounding this gives:
\[ \text{Total charge} \approx 1.93 \times 10^{5} \text{ C} \]

6. **Conclusion**:
- The assertion that the total charge on \( N_A \) ions of \( CO_3^{2-} \) is \( 1.93 \times 10^{5} \) coulombs is correct.
- The reason provided, stating that the charge on one electron is \( 96500 \) coulombs, is incorrect. The correct charge on one electron is \( 1.6 \times 10^{-19} \) coulombs.

### Final Answer:
- **Assertion**: True
- **Reason**: False
- **Correct Option**: Assertion is true, but reason is false.