Maximum number of compound are known in the case of :

Options

A. neon
B. xenon
C. krypton
D. argon

Answer

To solve the question regarding which noble gas has the maximum number of known compounds among Neon, Xenon, Krypton, and Argon, we can follow these steps:

### Step 1: Understand the Noble Gases
Noble gases are located in Group 18 of the periodic table and are known for their lack of reactivity due to having a complete valence shell. The noble gases in question are:
- Neon (Ne)
- Argon (Ar)
- Krypton (Kr)
- Xenon (Xe)

### Step 2: Review Known Compounds of Each Noble Gas
- **Neon (Ne)**: Neon is very inert and does not form any stable compounds under normal conditions.
- **Argon (Ar)**: Argon is also quite inert and has very few known compounds, primarily involving extreme conditions.
- **Krypton (Kr)**: Krypton can form some compounds, but they are limited in number.
- **Xenon (Xe)**: Xenon is the most reactive among the noble gases and has been found to form several compounds.

### Step 3: Identify Compounds of Xenon
Xenon can form a variety of compounds, including:
- **Xenon Fluorides**: XeF2, XeF4, XeF6
- **Xenon Oxides**: XeO3, XeO4, and others

### Step 4: Count the Known Compounds
Based on the compounds identified:
- Xenon has six known fluorides and several oxides, making it the noble gas with the maximum number of known compounds.

### Conclusion
Thus, the noble gas with the maximum number of known compounds is **Xenon (Xe)**.

### Final Answer
The answer is **Xenon (Xe)**.

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