Натриум
11
Na
Група
1
Периода
3
блок
s
Протони
Електрони
Неутрони
11
11
12
Општи Својства
Атомски број
11
Атомска тежина
22,98976928
Масен број
23
Категорија
Алкален метал
Боја
Сребро
Радиоактивно
Не
From the English word, soda; Medieval Latin, sodanum: a headache remedy
Кристална структура
Телоцентрирана кубна
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 на орбитала
2, 8, 1
Електронска конфигурација
[Ne] 3s1
Sodium burns in air with a brilliant yellow flame
Физички Својства
Фаза
Цврста состојба
Густина
0,971 g/cm3
Точка на топење
370,87 K | 97,72 °C | 207,9 °F
Точка на вриење
1156,15 K | 883 °C | 1621,4 °F
Топлина на топење
2,6 kJ/mol
Топлина на испарување
97,7 kJ/mol
Специфичен топлински капацитет
1,228 J/g·K
Обилност во Земјината кора
2,3%
Обилност во Универзумот
0,002%
CAS број
7440-23-5
PubChem CID број
5360545
Атомски Својства
Атомски полупречник
186 pm
Ковалентен полупречник
166 pm
Електронегативност
0,93 (Полингова скала)
Јонизациски потенцијал
5,1391 eV
Атомски волумен
23,7 cm3/mol
Топлинска спроводливост
1,41 W/cm·K
Оксидациски состојби
-1, 1
Примени
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