Kisik
8
O
Skupina
16
Perioda
2
Blok
p
Protoni
Elektroni
Nevtroni
8
8
8
Splošne lastnosti
Vrstno število
8
Atomska teža
15,9994
Masno število
16
Kategorija
Druge nekovine
Barva
Brezbarven
Radioaktivno
Ne
From the Greek word oxys, acid, and genes, forming
Kristalna struktura
Centrirana monoklinska
Zgodovina
Carl Wilhelm Scheele obtained oxygen by heating mercuric oxide and nitrates in 1771, but did not publish his findings until 1777.
Joseph Priestley also prepared this new air by 1774.
The name oxygen was coined in 1777 by Antoine Lavoisier, whose experiments with oxygen helped to discredit the then-popular phlogiston theory of combustion and corrosion.
Joseph Priestley also prepared this new air by 1774.
The name oxygen was coined in 1777 by Antoine Lavoisier, whose experiments with oxygen helped to discredit the then-popular phlogiston theory of combustion and corrosion.
Elektroni po lupinah
2, 6
Razporeditev elektronov
[He] 2s2 2p4
Green and red colors in the Aurora Borealis are caused by oxygen atoms
Fizikalne lastnosti
Faza snovi
Plin
Gostota
0,001429 g/cm3
Tališče
54,36 K | -218,79 °C | -361,82 °F
Vrelišče
90,2 K | -182,95 °C | -297,31 °F
Talilna toplota
0,222 kJ/mol
Izparilna toplota
3,41 kJ/mol
Toplotna kapaciteta
0,918 J/g·K
Zastopanost v Zemljini skorji
46%
Zastopanost v vesolju
1%
CAS številka
7782-44-7
PubChem CID številka
977
Atomske lastnosti
Atomski polmer
48 pm
Kovalentni polmer
66 pm
Elektronegativnost
3,44 (Paulingova lestvica)
Ionizacijski potencial
13,6181 eV
Atomski volumen
14,0 cm3/mol
Toplotna prevodnost
0,0002674 W/cm·K
Oksidacijska stanja
-2, -1, 1, 2
Uporabe
Pure oxygen is frequently used to help breathing in patients with respiratory ailments.
Oxygen is used in oxyacetylene welding, as an oxidant for rocket fuel, and in methanol and ethylene oxide production.
It is also used in the production of steel, plastics and textiles.
Plants and animals rely on oxygen for respiration.
Oxygen is used in oxyacetylene welding, as an oxidant for rocket fuel, and in methanol and ethylene oxide production.
It is also used in the production of steel, plastics and textiles.
Plants and animals rely on oxygen for respiration.
Oxygen gas can be toxic at elevated partial pressures, leading to convulsions and other health problems
Izotopi
Stabilni izotopi
16O, 17O, 18ONestabilni izotopi
12O, 13O, 14O, 15O, 19O, 20O, 21O, 22O, 23O, 24O, 25O, 26O, 27O, 28O