The difference between number of neutrons and protons is positive for

Options

A. Hydrogen atom
B. Deuterium atom
C. tritium atom
D. None of these

Explanation

To solve the question regarding the difference between the number of neutrons and protons being positive, we will analyze the isotopes of hydrogen: protium, deuterium, and tritium.

### Step-by-Step Solution:

1. **Identify the Isotopes of Hydrogen**:
- Hydrogen has three isotopes: Protium (¹H), Deuterium (²H), and Tritium (³H).

2. **Determine the Number of Protons and Neutrons for Each Isotope**:
- **Protium (¹H)**:
- Protons: 1
- Neutrons: 0
- **Deuterium (²H)**:
- Protons: 1
- Neutrons: 1
- **Tritium (³H)**:
- Protons: 1
- Neutrons: 2

3. **Calculate the Difference Between Neutrons and Protons (N - P)**:
- For Protium:
- N - P = 0 - 1 = -1 (Negative)
- For Deuterium:
- N - P = 1 - 1 = 0 (Zero)
- For Tritium:
- N - P = 2 - 1 = 1 (Positive)

4. **Conclusion**:
- The difference between the number of neutrons and protons is positive for Tritium (³H).

### Final Answer:
The difference between the number of neutrons and protons is positive for Tritium (³H).

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