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Technik

Chemisches Periodensystem

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Nummer	Element
1	{{{2}}}, WasserstoffWasserstoff
2	{{{2}}}, HeliumHelium
3	{{{2}}}, LithiumLithium
40	{{{2}}}, ZirkoniumZirkonium
46	{{{2}}}, PalladiumPalladium
118	{{{2}}}, UnunoctiumUnunoctium

English Version

Hydrogen
Symbol	H
Number	1
Standard atomic weight	1,0079
Electron configuration	1 s1
Melting point	-259,14 °C
Boiling point	-252,5 °C

Hydrogen is a chemical element with atomic number 1. The symbol is H. With an average atomic weight of ... hydrogen is the lightest and most abundant chemical element, constituting roughly 75% of the Universe's chemical elemental mass. Stars in the main sequence are mainly composed of hydrogen in its plasma state. Naturally occurring elemental hydrogen is relatively rare on Earth.

The most common isotope of hydrogen is ¹H) with a single proton. In ionic compounds it can take a negative charge, written as H⁻), or as a positively charged species H⁺. In reality, hydrogen cations in ionic compounds always occur as more complex species. Hydrogen forms compounds with most elements and most organic compounds. It plays a particularly important role in acid-base chemistry with many reactions exchanging protons between soluble molecules.

Musiker

Familienname	Name	Geburt	Tod	Geburtsort
Bach	{{{2}}}, Johann Sebastian BachJohann Sebastian Bach	1685	1750	Eisenach
Beethoven	{{{2}}}, Ludwig van BeethovenLudwig van Beethoven	1770	1827	Bonn
Brahms	{{{2}}}, Johannes BrahmsJohannes Brahms	1833	1897	Hamburg
Liszt	{{{2}}}, Franz LisztFranz Liszt	1811	1886	Rading
Schumann	{{{2}}}, Robert SchumannRobert Schumann	1810	1856	Zwickau