All the following metal elements are liquids at or near room temperature EXCEPT:

The story behind the answer

Beryllium is the exception because it has a very high melting point (~1287°C) due to its small, highly charged ions and strong metallic/covalent bonding, so it stays solid at room temperature. In contrast, mercury is liquid at room temperature, while gallium (melts at ~29.8°C) and caesium (~28.5°C) melt just above room temperature—warm your hand and they can liquefy.

Context tip: Only two elements are liquids at room temperature—mer