What is the atomic number of noble gas that reacts with F2

Options

A. 10
B. 12
C. 18
D. 54

Answer

To determine the atomic number of the noble gas that reacts with fluorine (F2), we can follow these steps:

### Step-by-Step Solution:

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

2. **List the Atomic Numbers**:
- Helium (He) - Atomic Number: 2
- Neon (Ne) - Atomic Number: 10
- Argon (Ar) - Atomic Number: 18
- Krypton (Kr) - Atomic Number: 36
- Xenon (Xe) - Atomic Number: 54
- Radon (Rn) - Atomic Number: 86

3. **Understand Reactivity of Noble Gases**:
Noble gases are generally unreactive due to their full valence electron shells. However, some can react under certain conditions.

4. **Identify the Noble Gas that Reacts with F2**:
Among the noble gases, xenon (Xe) is known to react with fluorine (F2) to form xenon fluorides. This is due to its larger atomic size and the ability to expand its valence shell.

5. **Conclusion**:
The atomic number of the noble gas that reacts with fluorine is 54, which corresponds to xenon (Xe).

### Final Answer:
The atomic number of the noble gas that reacts with F2 is **54** (Xenon).

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