Which of the following is a property of metals?

Some properties of metals include the following:

1. Conductivity: Metals are excellent conductors of heat and electricity. They have a high thermal and electrical conductivity, allowing them to easily transfer heat and electricity.

2. Luster: Metals have a shiny, reflective surface or luster. This property is due to the ability of metals to reflect light.

3. Malleability: Metals can be easily deformed into different shapes without breaking. They have the property of malleability, which allows them to be hammered or rolled into thin sheets.

4. Ductility: Metals can also be drawn into wires without breaking. They have the property of ductility, which allows them to be stretched into thin wires.

5. High melting and boiling points: Metals have high melting and boiling points, which make them solid at room temperature (with a few exceptions). This property is due to the metallic bonding between metal atoms.

6. Density: Metals are generally dense materials. They have a high mass per unit volume, which means they are heavy compared to their size.

7. Tensile strength: Metals have a high tensile strength, which means they can withstand pulling or stretching forces without easily breaking.

8. Reactivity: Metals react with other elements to form compounds. The reactivity of metals varies, but most metals readily react with oxygen to form metal oxides.

It is important to note that not all metals exhibit all these properties to the same extent. The specific properties can vary depending on the metal in question.