Which of the following is not property of a non-metal ?

Options

A. Formus anions
B. Forms acidic oxides
C. High tensile strength
D. Low density

Explanation

To determine which of the following options is not a property of a non-metal, we will analyze each option one by one:

1. **Option A: It forms anions.**
- Non-metals tend to gain electrons to achieve a stable electron configuration, which allows them to form anions. For example, chlorine (Cl) can gain an electron to form Cl⁻. Therefore, this is a property of non-metals.

2. **Option B: It forms acidic oxides.**
- Non-metals react with oxygen to form non-metallic oxides, which can be acidic in nature. For instance, sulfur can combine with oxygen to form sulfur dioxide (SO₂), which, when dissolved in water, forms sulfurous acid (H₂SO₃). Thus, this is also a property of non-metals.

3. **Option C: High tensile strength.**
- Tensile strength refers to the ability of a material to withstand tension or pulling forces. Non-metals generally have low tensile strength compared to metals. For example, materials like rubber or plastics (which are non-metals) do not handle high stress well. Therefore, this is not a property of non-metals.

4. **Option D: Low density.**
- Non-metals typically have low density compared to metals. Many non-metals are gases at room temperature (like oxygen and nitrogen) or exist as liquids (like bromine), which supports the idea of low density. Hence, this is a property of non-metals.

**Conclusion:**
Based on the analysis, the option that is not a property of non-metals is **C: high tensile strength**.

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