Väte

1
H
Grupp
1
Period
1
Block
s
Protoner
Elektroner
Neutroner
1
1
0
Generella Egenskaper
Atomnummer
1
Atommassa
1,00794
Masstal
1
Kategori
Icke-metaller
Färg
Färglös
Radioaktiv
Nej
From the Greek word hydro (water), and genes (forming)
Kristallstruktur
Enkelt hexagonalt
Historia
Henry Cavendish was the first to distinguish hydrogen from other gases in 1766 when he prepared it by reacting hydrochloric acid with zinc.

In 1670, English scientist Robert Boyle had observed its production by reacting strong acids with metals.

French scientist Antoine Lavoisier later named the element hydrogen in 1783.
Elektroner per skal
1
Elektronkonfiguration
1s1
H
Hydrogen is the primary component of Jupiter and the other gas giant planets
Fysikaliska Egenskaper
Aggregationstillstånd
Gasformig
Densitet
0,00008988 g/cm3
Smältpunkt
14,01 K | -259,14 °C | -434,45 °F
Kokpunkt
20,28 K | -252,87 °C | -423,17 °F
Smältvärme
0,558 kJ/mol
Ångbildningsvärme
0,452 kJ/mol
Specifik värmekapacitet
14,304 J/g·K
Abundance in Earth's crust
0,15%
Abundance in Universe
75%
Vial
Bildkrediter: Images-of-elements
Vial of glowing ultrapure hydrogen
CAS Number
1333-74-0
PubChem CID Number
783
Atomära Egenskaper
Atomradie
53 pm
Kovalent radie
31 pm
Elektronegativitet
2,2 (Paulingskalan)
Jonisationspotential
13,5984 eV
Molvolym
14,4 cm3/mol
Värmeledningsförmåga
0,001815 W/cm·K
Oxidationstillstånd
-1, 1
Användningsområden
Liquid hydrogen is used as a rocket fuel.

Hydrogen is commonly used in power stations as a coolant in generators.

Hydrogen's two heavier isotopes (deuterium and tritium) are used in nuclear fusion.

Used as a shielding gas in welding methods such as atomic hydrogen welding.
Hydrogen poses a number of hazards to safety, from fires when mixed with air to being an asphyxiant in its pure form
Isotoper
Stabila isotoper
1H, 2H
Instabila isotoper
3H, 4H, 5H, 6H, 7H