All water vapor is broken down into Hand O by action of UV photons

All water vapor is broken down into hydrogen H₂↗and O↗, simple and free gaseous bodies under the action of ultraviolet photons. hv H₂O → H₂↗ O↗ Rainwater is formed from H₂ ½ of O₂ . An explosive chemical reaction with formation of water. Explosive synthesis H₂ ½ of O₂ → H₂O → rain. Under the effect of compression due to the opposition of 2 mechanical forces (ascending and descending air currents), the air heats up and the atoms and molecules present ionize under the effect of agitation and friction and react with each other.