Кисеоник
8
O
Група
16
Периода
2
Блок
p
Протони
Електрони
Неутрони
8
8
8
Општа својства
Атомски број
8
Атомска маса
15,9994
Масени број
16
Категорија
Други неметали
Боја
Безбојни
Радиоактиван
Не
From the Greek word oxys, acid, and genes, forming
Кристална структура
Базноцентрична Моноклинска
Историја
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.
Електрони по љусци
2, 6
Електронска конфигурација
[He] 2s2 2p4
Green and red colors in the Aurora Borealis are caused by oxygen atoms
Физичка својства
Стање
Гас
Густина
0,001429 g/cm3
Температура топљења
54,36 K | -218,79 °C | -361,82 °F
Температура кључања
90,2 K | -182,95 °C | -297,31 °F
Топлота топљења
0,222 kJ/mol
Топлота испаравања
3,41 kJ/mol
Специфична топлота
0,918 J/g·K
Заступљеност у Земљиној кори
46%
Заступљеност у Космосу
1%
CAS број
7782-44-7
ПубЦхем ЦИД број
977
Атомска својства
Атомски радијус
48 pm
Ковалентни радијус
66 pm
Електронегативност
3,44 (Полингова скала)
Јонизујући потенцијал
13,6181 eV
Молска запремина
14,0 cm3/mol
Топлотна проводљивост
0,0002674 W/cm·K
Оксидациона стања
-2, -1, 1, 2
Примена
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
Изотопи
Стабилни изотопи
16O, 17O, 18OНестабилни изотопи
12O, 13O, 14O, 15O, 19O, 20O, 21O, 22O, 23O, 24O, 25O, 26O, 27O, 28O