Which property is typical of metals?

### Properties of Metals Metals are elements that occupy the left and middle sections of the periodic table. They are characterized by several distinct physical properties: 1. **Lustre**: Metals have a shiny appearance because they reflect light effectively. This is known as being *lustrous*. 2. **Malleability**: Metals can be hammered or pressed into thin sheets without breaking or cracking. This is due to the ability of metal atoms to slide over one another while maintaining their metallic bonds. 3. **Conductivity**: Metals are excellent conductors of heat and electricity because of their 'sea' of delocalized electrons. 4. **Ductility**: They can be drawn out into thin wires. ### Evaluating the Options - **Lustrous and malleable**: These are both core metallic properties. - **Brittle and dull**: These are characteristic of non-metals (e.g., sulfur). - **Poor conductor of heat**: Metals are actually high-efficiency heat conductors. - **Always non-shiny**: This contradicts the property of metallic lustre. Therefore, the typical properties of metals are being **lustrous and malleable**.