The correct statement is:
Metals can be hammered into thin sheets, and nonmetals are brittle.
This is true because metals are malleable, meaning they can be shaped or hammered without breaking, while nonmetals tend to be brittle and break or shatter when subjected to stress.
The other statements are incorrect:
- Most nonmetals are gases or solids under normal conditions, not liquids.
- Metals and nonmetals do not appear in every column of the periodic table; they are categorized into distinct areas (with metals on the left and nonmetals on the right).
- Metals are generally good conductors of electricity, while nonmetals are not.