. "caesium"@en . . "Cs (cesium)"@en . "2014-02-26T11:31:09"^^ . . "2013-03-21T14:59:14"^^ . "300380498" . "Metallic element having symbol Cs and atomic number of 132.905. Cesium is a soft, silvery gold alkali metal with a very low melting point; it is the most reactive and electropositive of all the elements."@en . "cesium"@en .