Cesium melts at 28 deg C so it's not liquid at normal room temperature.
When I started work in a chemistry lab back in the 1960s we made spoons out of Cesium. We gave them to unsuspecting new starters to stir their coffee or tea, of course the spoon would melt once to was put into the hot tea ( we were careful not to let them actually drink it as Cesium is poisonous)
I worked for months in a lab that had large wooden trays full of Mercury open to the air, we used it for 'solvent casting' to make thin films of organic materials to analyse in the Infra red spectrometer. Mercury and solvent vapor in the same room ! I sometime wonder how we survived those 1960s chem labs.
I think we had every chemical known to science and virtually no safety rules. We dried solvents by dropping Sodium into the bottles, if the water content was too high they were likely to catch fire or explode .