Noble gases are chemically _________ .

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Noble Gases**: Noble gases are a group of elements found in Group 18 of the periodic table. They include helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).

2. **Chemical Properties**: The question asks about the chemical nature of noble gases. Noble gases are known for their lack of reactivity.

3. **Inert Nature**: The term "inert" refers to the fact that noble gases do not readily react with other elements or compounds. This is due to their stable electronic configuration.

4. **Stable Electronic Configuration**: Noble gases have completely filled outer electron shells. For example, helium has 2 electrons, neon has 10, and argon has 18 electrons, all filling their respective outer shells.

5. **No Tendency to React**: Because their outer shells are full, noble gases do not have a tendency to gain or lose electrons. This stability means they do not form bonds with other elements easily.

6. **Conclusion**: Therefore, the correct answer to the question is that noble gases are chemically **inert**.

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