Brint

1
H
Gruppe
1
Periode
1
Blok
s
Protons
Electrons
Neutrons
1
1
0
General Properties
Atomnummer
1
Atommasse
1,00794
Mass Number
1
Kategori
Andre ikke-metaller
Farve
Colorless
Radioactive
Nej
From the Greek word hydro (water), and genes (forming)
Krystalstruktur
Simpel Hexagonal
History
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 i hver skal
1
Elektronkonfiguration
1s1
H
Hydrogen is the primary component of Jupiter and the other gas giant planets
Physical Properties
Tilstandsform
Gas
Massefylde
0,00008988 g/cm3
Smeltepunkt
14,01 K | -259,14 °C | -434,45 °F
Kogepunkt
20,28 K | -252,87 °C | -423,17 °F
Smeltevarme
0,558 kJ/mol
Fordampningsvarme
0,452 kJ/mol
Varmefylde
14,304 J/g·K
Abundance in Earth's crust
0,15%
Abundance in Universe
75%
Vial
Billede akkrediteringer: Images-of-elements
Vial of glowing ultrapure hydrogen
CAS Number
1333-74-0
PubChem CID Number
783
Atomic Properties
Atomradius
53 pm
Kovalent radius
31 pm
Elektronegativitet
2,2 (Paulings skala)
Ionization Potential
13,5984 eV
Atomic Volume
14,4 cm3/mol
Varmeledningsevne
0,001815 W/cm·K
Oxidationstrin
-1, 1
Applications
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
Stable Isotopes
1H, 2H
Unstable Isotopes
3H, 4H, 5H, 6H, 7H