What state are all metals in at room temperature?

Metals are predominantly found in a solid state at room temperature due to their atomic structure and metallic bonding characteristics. In solids, the atoms are closely packed together in a defined arrangement, which allows metals to maintain a fixed shape and volume. This arrangement contributes to properties such as high density and strength, which are typical of metals.

The only exception among metals is mercury, which is a liquid at room temperature. However, when considering all metals collectively, the overwhelming majority exist as solids under standard conditions (room temperature). Therefore, asserting that all metals are solids at room temperature accurately reflects the common behavior of metallic elements, making it the appropriate choice.