The binding energy of nucleus is a measure of its.

Options

A. Mass
B. Stability
C. Charge
D. Momentum

Answer

To solve the question regarding the binding energy of a nucleus, we will analyze the options provided and understand the concept of binding energy.

### Step-by-Step Solution:

1. **Understanding Binding Energy**:
- Binding energy is defined as the energy required to separate a nucleus into its individual nucleons (protons and neutrons).

2. **Analyzing the Options**:
- The options given are mass, stability, charge, and momentum.
- We need to determine which of these is directly related to the concept of binding energy.

3. **Relating Binding Energy to Stability**:
- A nucleus with a high binding energy indicates that a significant amount of energy is required to break it apart. This implies that the nucleus is more stable.
- Conversely, a nucleus with low binding energy is less stable, as it requires less energy to break it apart.

4. **Conclusion**:
- Since binding energy is directly related to how stable a nucleus is, we can conclude that the binding energy of a nucleus is a measure of its stability.

### Final Answer:
The binding energy of a nucleus is a measure of its **stability**.

---