Inert gases have________ electrons or________ electrons in their valence shell.

Explanation

To answer the question: "Inert gases have ________ electrons or ________ electrons in their valence shell," we need to understand the electronic configuration of inert gases.

### Step-by-Step Solution:

1. **Identify Inert Gases**: Inert gases, also known as noble gases, include Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn).

2. **Understand Valence Shell**: The valence shell is the outermost shell of an atom where the electrons reside. For inert gases, this shell is completely filled with electrons.

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