Valency of inert gases is

Options

A. zero
B. one
C. three
D. two

Explanation

**Step-by-Step Solution:**

1. **Understanding Valency**: Valency is defined as the combining capacity of an atom or an element with other elements. It indicates how many electrons an atom can lose, gain, or share when it forms chemical bonds.

2. **Identifying Inert Gases**: Inert gases, also known as noble gases, include helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). These gases are located in Group 18 of the periodic table.

3. **Chemical Reactivity of Inert Gases**: Inert gases are characterized by their lack of chemical reactivity. This is due to their complete valence electron shell, which makes them stable and less likely to form bonds with other elements.

4. **Determining Valency of Inert Gases**: Since inert gases do not readily combine with other elements due to their stable electronic configuration, their valency is considered to be negligible. Therefore, we conclude that the valency of inert gases is zero.

5. **Final Answer**: The valency of inert gases is zero.

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