The noble gas forming maximum number of compounds is .

Options

A. Ne
B. Xe
C. He
D. Ar

Explanation

To determine which noble gas forms the maximum number of compounds, we will analyze the properties of the noble gases and their ability to form compounds.

### Step-by-Step Solution:

1. **Identify the Noble Gases**: The noble gases are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).

2. **Understand the Stability of Noble Gases**: Noble gases are known for their stability due to having a complete valence shell of electrons. This makes them generally unreactive.

3. **Consider Atomic Size and Mass**: As we move down the group in the periodic table, the atomic size and mass of noble gases increase. For example, xenon is larger and heavier than helium.

4. **Evaluate the Ability to Form Compounds**: The larger noble gases, particularly xenon, have a weaker attraction between their outer electrons and the nucleus due to their larger size. This allows them to lose or share electrons more easily compared to smaller noble gases.

5. **Identify Known Compounds**: Xenon is known to form several compounds, such as xenon fluorides (XeF2, XeF4, XeF6) and xenon oxides (XeO3, XeO4). In contrast, other noble gases like helium and neon do not form stable compounds under normal conditions.

6. **Conclusion**: Based on the analysis, xenon (Xe) is the noble gas that forms the maximum number of compounds due to its larger atomic size and mass, which facilitates the formation of chemical bonds.

### Final Answer:
The noble gas forming the maximum number of compounds is **xenon (Xe)**.

---