What elements are liquids at room temperature?

Two elements are liquid at room temperature (298 K):

Bromine (Br), an reddish brown liquid with
a suffocating odor, melts at 265.9 K.
Mercury (Hg), a toxic metal, melts at 234.32 K.
(See Why is mercury a liquid at STP?)

Four elements melt just a few degrees above room temperature.

Francium (Fr), a radioactive and extremely reactive metal, melts around 300 K. The false color image at left shows 10,000 francium atoms in a laser trap. (For more about francium, see the Orozco group's francium research page at SUNY-Stony Brook.)

Cesium (Cs), a soft metal that violently reacts with water, melts at 301.59 K. Like francium, cesium's low melting point and softness is a consequence of the size of its atoms: Cs atoms are larger than those of any other known element. The positive charge of a Cs⁺ core is spread over the atom's large surface area, and less energy is required to push Cs atoms out of place in the metal.

Stupid gallium trick. Gallium (Ga), a grayish metal, melts at 303.3 K. Gallium's near-ambient melting point is sometimes demonstrated with a picture of a gallium rod liquefying in someone's bare hand. Wear gloves if you try this yourself: gallium causes skin rashes and can depress bone marrow function.

Rubidium (Rb), another soft reactive metal, melts at 312.46 K.

What elements are liquids at room temperature?

Further reading