|Group||1||Melting point||−259.16°C, −434.49°F, 13.99 K|
|Period||1||Boiling point||−252.879°C, −423.182°F, 20.271 K|
|Block||s||Density (g cm−3)||0.000082|
|Atomic number||1||Relative atomic mass||1.008|
|State at 20°C||Gas||Key isotopes||1H, 2H|
|Electron configuration||1s1||CAS number||133-74-0|
|ChemSpider ID||4515072||ChemSpider is a free chemical structure database|
- The start the tour along the periodic table of elements, the first element to come across is Hydrogen, whose chemical symbol is H. It is the first and most basic among all the elements in the universe. It is also the lightest element in the periodic table, and 90% of all the atoms in the universe are hydrogen atoms.
- The chemist Lavoisier gives the name hydrogen. It got its name from the Greek word “hydro” meaning water. Lavoisier knew that it existed in every water molecule.
- Ammonia synthesis is the most significant use of hydrogen.
- A large amount of hydrogen is consumed in the catalytic hydrogenation of vegetable oils to extract solid fat.
- It is also consumed as a rocket fuel when combined with oxygen or fluor, and as a rocket propellant by nuclear energy.
- Hydrogen is burnt as a fuel to burn in internal combustion engines.