2Cs(s) + 2H₂O(l) → 2CsOH(aq) + H₂(g)

Where:

* Cs(s) represents caesium in its solid state.

* H₂O(l) represents water in its liquid state.

* CsOH(aq) represents caesium hydroxide dissolved in water (aqueous solution).

* H₂(g) represents hydrogen gas.

This reaction is highly exothermic and violent, producing a lot of heat, hydrogen gas, and a solution of caesium hydroxide. The hydrogen gas produced can ignite spontaneously in the air, causing an explosion.