The correct statement is:
Metals can be hammered into thin sheets, and nonmetals are brittle.
Metals are malleable, meaning they can be shaped or hammered into thin sheets, while nonmetals are generally brittle and do not have this property.
The other statements are incorrect:
- Metals and nonmetals generally occupy different areas of the periodic table; for example, metals are predominantly found on the left side and nonmetals on the right.
- Metals are typically good conductors of electricity, while nonmetals are generally poor conductors.
- Most metals are solid at room temperature (with the exception of mercury), whereas most nonmetals are gases or solids (only one nonmetal, bromine, is a liquid at room temperature).