Which one of the following is NOT a property of pure metals?High melting pointPoor electrical conductorSolid at room temperatureGood thermal conductor

To determine which option is NOT a property of pure metals, let's analyze each choice based on the characteristics of pure metals.

1. High melting point: Most pure metals have high melting points, which allow them to remain solid at room temperature.

2. Poor electrical conductor: This is NOT true for pure metals. In fact, pure metals are typically excellent electrical conductors due to the presence of free-moving electrons.

3. Solid at room temperature: Pure metals are generally solid at room temperature, with the exception of mercury (Hg), which is liquid.

4. Good thermal conductor: Pure metals are usually good thermal conductors, allowing heat to transfer quickly.

Conclusion

The option that is NOT a property of pure metals is "Poor electrical conductor."