Hydrogen

Hydrogen is a chemical element represented by the symbol H and atomic number 1. It is the simplest and lightest element on the periodic table, consisting of only one proton and one electron. Hydrogen is a colourless, odourless, and tasteless gas at room temperature and is highly flammable. It is the most abundant element in the universe, primarily found in stars, including the sun, where it undergoes nuclear fusion to form helium and release energy. In terms of compounds, hydrogen readily combines with other elements and is a key component of water (H2O) and most organic compounds. Hydrogen has applications in various industries, including fuel cells, where it is used as a clean energy source, and in the production of ammonia for fertilizers.