What is the order iof ionisation enthalpy values of noble gases?

Explanation

To determine the order of ionization enthalpy values of noble gases, we need to understand how ionization enthalpy varies within the group of noble gases in the periodic table.

### 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 Ionization Enthalpy**: Ionization enthalpy is the energy required to remove an electron from an atom in its gaseous state. Generally, ionization enthalpy increases across a period and decreases down a group in the periodic table.

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