If a non-metal is added to the interstitial sites of a metal then the metal becomes:

Options

A. Softer
B. Less malleable
C. Less tensile
D. More ductile

Answer

To solve the question regarding the effect of adding a non-metal to the interstitial sites of a metal, we can break down the reasoning step by step.

### Step 1: Understand Interstitial Sites
Interstitial sites are the small spaces or voids in a crystal lattice where smaller atoms can fit in between the larger metal atoms. These sites are crucial in determining the properties of the metal.

**Hint:** Consider what happens to the arrangement of atoms when a smaller atom occupies these spaces.

### Step 2: Identify the Role of Non-Metals
When a non-metal is added to the interstitial sites of a metal, it can influence the overall structure and bonding of the metal. Non-metals typically have different bonding characteristics compared to metals.

**Hint:** Think about how non-metals differ from metals in terms of bonding and structure.

### Step 3: Analyze the Effect on Metal Properties
The addition of a non-metal to the interstitial sites can lead to a change in the mechanical properties of the metal. Specifically, it can make the metal less tensile. Tensile strength refers to the resistance of a material to breaking under tension.

**Hint:** Reflect on how the presence of a non-metal might affect the ability of the metal to withstand stretching forces.

### Step 4: Conclusion
Based on the analysis, when a non-metal is added to the interstitial sites of a metal, the metal becomes less tensile. This means that it will be more prone to deformation under stress.

**Final Answer:** The metal becomes less tensile.

### Summary of Steps:
1. Understand interstitial sites in crystal lattices.
2. Identify the role of non-metals in the structure.
3. Analyze the effect on mechanical properties, specifically tensile strength.
4. Conclude that the metal becomes less tensile.