Is caesium soluble in water

The cesium will react with the water and create an explosion. This is due to the fact that it is in the Alkali metals column, which all react with water. The reaction strength increases the further down the column you go Caesium (cesium in USA) metal reacts rapidly with water to form a colourless solution of caesium hydroxide (CsOH) and hydrogen gas (H2). The resulting solution is basic because of the dissolved hydroxide. The reaction is very exothermic. The reaction is so fast that if the reaction is carried out in a glass vessel, the glass container will shatter. Although not known for certain, the reaction is probably slower than that of francium (immediately below caesium in the Periodic Table). The reaction is faster than that of rubidium (immediately above caesium in the periodic table). 2Cs(s) + 2H2O → 2CsOH(aq) + H2(g) it blows up