The chemical element hydrogen is represented by the letter h and atomic number 1, additionally is the lightest element in the element
table. Under mundane circumstances, hydrogen is a
gas composed of diatomic molecules with the formula
h2. It is prodigiously flammable, achromic, insipid, odourless, and non-toxic. In the macrocosm, hydrogen is the most prevalent chemical since it makes up around
75% of all commonplace
stuff. Plasma hydrogen makes up the majority of stars like the
sun. The majority of the hydrogen that subsists on earth is found in molecules like dihydrogen monoxide and organic compounds. Each atom of hydrogen's most mundane isotope, 1h, has
one proton,
one electron, and no neutrons.
except when under prodigiously high pressures, hydrogen is nonmetallic. It seldom makes more than
one covalent
bond with nonmetallic elements, giving ascend to molecules like dihydrogen monoxide and proximately all organic compounds. Since protons are typically exchanged between soluble molecules in
acid-
base reactions, hydrogen plays a categorically paramount part in these processes. In ionic compounds, hydrogen can subsist as a positively charged (i. e. , cation) species designated by the symbol h+ as a supposititious succedaneum a negatively charged (i. e. , anion) species kenned as a hydride.
Despite the fact that there are two hydrogen atoms for every
oxygen atom in dihydrogen monoxide, hydrogen has a far lower mass.
Hyundai will introduce a fuel cell-powered
SUV in 2014, making it the first automaker to mass-market a hydrogen-powered conveyance, according to the ap.
The technique of electrolysis, in which dihydrogen monoxide molecules are split into hydrogen and
oxygen by an electric current, can withal be habituated to make hydrogen
