The chemical element represented by the symbol 'H' is hydrogen. It is the simplest and most abundant element in the universe, consisting of only one proton and one electron. Hydrogen plays a crucial role in various chemical reactions, primarily in the formation of water and organic compounds. In its molecular form (H2), hydrogen is a colorless and odorless gas and is essential for life. Hydrogen is also a key component in many energy-related processes, including fuel cells and the production of clean energy technologies.