Which noble gas is more soluble in water ?

Options

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

Explanation

To determine which noble gas is more soluble in water, we can follow these steps:

### Step 1: Identify the noble gases
The noble gases we are considering are helium (He), neon (Ne), argon (Ar), and xenon (Xe).

### Step 2: Understand the properties of noble gases
Noble gases are known for their low reactivity due to their complete valence electron shells. However, their solubility in water can vary.

### Step 3: Analyze the trend in solubility
Generally, as we move down the group in the periodic table, the size of the noble gas atoms increases. Larger atoms tend to have more polarizable electron clouds, which can lead to increased solubility in polar solvents like water.

### Step 4: Compare the noble gases
- **Helium (He)**: Very small and non-polar, with low solubility in water.
- **Neon (Ne)**: Slightly larger than helium, but still very low solubility.
- **Argon (Ar)**: Larger than neon, with a bit more solubility than both He and Ne.
- **Xenon (Xe)**: The largest among these noble gases, and it has the highest solubility in water due to its larger size and polarizability.

### Step 5: Conclusion
Based on the analysis, xenon (Xe) is the most soluble noble gas in water.

### Final Answer
The noble gas that is more soluble in water is **Xenon (Xe)**.

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