The splitting of water is the specific process in the light-dependent reactions that produces oxygen and hydrogen ions.
The specific process in the light-dependent reactions that produces oxygen and hydrogen ions is the splitting of water. During this process, water molecules are split into oxygen molecules, releasing oxygen gas, and hydrogen ions (H+) that are later used in the formation of ATP and NADPH. The splitting of water is an essential step in photosynthesis as it provides electrons for the electron transport chain and replenishes the supply of protons (H+) in the thylakoid space.