The correct statement is: Metals can be hammered into thin sheets, and nonmetals are brittle.
This statement accurately describes the physical properties of metals and nonmetals. Metals are malleable and ductile, meaning they can be shaped and stretched, while nonmetals are typically brittle and break or shatter instead of deforming.
The other statements contain inaccuracies:
- Metals are generally good conductors of electricity, while nonmetals are typically poor conductors (insulators).
- Most metals are solids at room temperature, while most nonmetals (such as gases like nitrogen and oxygen) are not solids; only a few nonmetals, like bromine, are liquids.
- Metals and nonmetals are not both found in every column of the periodic table; they are categorized distinctly, with metals primarily on the left side and nonmetals on the right side.