Hydrogen, symbol H, molecular formula H2 is a colourless, odourless, tasteless, flammable gaseous chemical substances among the periodic table family
Hydrogen, symbol H, molecular formula H2 is a colourless, odourless, tasteless, flammable gaseous chemical substances among the periodic table family. In chemistry or chemical science, the hydrogen atom is the only member of the chemical element in which the valence electron under the direct influence of the nucleus, bearing one unit positive and negative electrical charge. Under ordinary conditions, hydrogen gas consists of a pair of atoms or a diatomic molecule with a wide range of bonding. The most important chemical compound water (H2O) is obtained by burning it with oxygen molecules. Due to unique characteristics properties, hydrogen (H) forms chemical compounds or molecules with nearly every periodic table active element.