Натријум
11
Na
Група
1
Периода
3
Блок
s
Протони
Електрони
Неутрони
11
11
12
Општа својства
Атомски број
11
Атомска маса
22,98976928
Масени број
23
Категорија
Алкални метали
Боја
Сребрена
Радиоактиван
Не
From the English word, soda; Medieval Latin, sodanum: a headache remedy
Кристална структура
Просторноцентрична Кубична
Историја
The chemical abbreviation for sodium was first published by Jöns Jakob Berzelius in his system of atomic symbols.
It is a contraction of the element's new Latin name natrium, which refers to the Egyptian natron, a natural mineral salt primarily made of hydrated sodium carbonate.
In 1807, Sir Humphry Davy isolated sodium for the first time by electrolysis of dried sodium hydroxide, which had been very slightly moistened.
It is a contraction of the element's new Latin name natrium, which refers to the Egyptian natron, a natural mineral salt primarily made of hydrated sodium carbonate.
In 1807, Sir Humphry Davy isolated sodium for the first time by electrolysis of dried sodium hydroxide, which had been very slightly moistened.
Електрони по љусци
2, 8, 1
Електронска конфигурација
[Ne] 3s1
Sodium burns in air with a brilliant yellow flame
Физичка својства
Стање
Чвсрто
Густина
0,971 g/cm3
Температура топљења
370,87 K | 97,72 °C | 207,9 °F
Температура кључања
1156,15 K | 883 °C | 1621,4 °F
Топлота топљења
2,6 kJ/mol
Топлота испаравања
97,7 kJ/mol
Специфична топлота
1,228 J/g·K
Заступљеност у Земљиној кори
2,3%
Заступљеност у Космосу
0,002%
CAS број
7440-23-5
ПубЦхем ЦИД број
5360545
Атомска својства
Атомски радијус
186 pm
Ковалентни радијус
166 pm
Електронегативност
0,93 (Полингова скала)
Јонизујући потенцијал
5,1391 eV
Молска запремина
23,7 cm3/mol
Топлотна проводљивост
1,41 W/cm·K
Оксидациона стања
-1, 1
Примена
Metallic sodium is vital in the manufacture of esters and in the preparation of organic compounds.
Sodium vapor lamps are often used for street lighting in cities.
Liquid sodium is used as a heat transfer fluid in some fast reactors.
Sodium is also used as an alloying metal, an anti-scaling agent, and as a reducing agent for metals when other materials are ineffective.
Sodium vapor lamps are often used for street lighting in cities.
Liquid sodium is used as a heat transfer fluid in some fast reactors.
Sodium is also used as an alloying metal, an anti-scaling agent, and as a reducing agent for metals when other materials are ineffective.
Sodium metal should be handled with great care as it cannot be maintained in an inert atmosphere
Изотопи
Стабилни изотопи
23NaНестабилни изотопи
18Na, 19Na, 20Na, 21Na, 22Na, 24Na, 25Na, 26Na, 27Na, 28Na, 29Na, 30Na, 31Na, 32Na, 33Na, 34Na, 35Na, 36Na, 37Na