History of Hydrogen gas, H2, is old. It was first artificially produced and formally described by T. Von Hohenheim (also known as Paracelsus, 1493 - 1541) via the mixing of metals with strong acids. John Dalton (1766-1844) formed his atomic theory of matter, and despite the great strides he made for science, Dalton remained convinced that hydrogen and oxygen in water formed "water atoms."
Hydrogen is colorless, highly flammable gaseous element, the lightest of all gases and the most abundant element in the universe. The atomic number of hydrogen is 1, meaning that it has a single proton in its nucleus. With its single electron, hydrogen is the simplest element of all. Hydrogen has two stable isotopes-Protium accounts for 99.985% of all the hydrogen that appears in nature & Deuterium makes up 0.015% of all hydrogen atoms.
Uses of Hydrogen:
It is used in the production of synthetic ammonia and methanol. It has also a reputed place in petroleum refining, in the hydrogenation of organic materials, as a reducing atmosphere, in oxyhydrogen torches. Space science uses hydrogen in rocket fuels. Also used in the "hydrogenation" of edible oils to prevent oxidation and to amend the characteristics of the oil's effects on food products.
Properties of Hydrogen:
|Density||0°C 0.08987 gram per liter|
Form: colorless gas
Stability: Stable, but highly flammable
Melting point : -2590C
Boiling point : -2530 C
Critical temperature : -2400 C
Flammability range : 4% - 75% in air