Натриум

11
Na
Група
1
Периода
3
блок
s
Protons
Electrons
Neutrons
11
11
12
Општи Својства
Атомски број
11
Атомска тежина
22,98976928
Mass Number
23
Category
Алкален метал
Color
Silver
Radioactive
Не
From the English word, soda; Medieval Latin, sodanum: a headache remedy
Кристална структура
Body Centered Cubic
History
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.
Electrons per shell
2, 8, 1
Електронска конфигурација
[Ne] 3s1
Na
Sodium burns in air with a brilliant yellow flame
Физички Својства
Фаза
Solid
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
Specific Heat Capacity
1,228 J/g·K
Abundance in Earth's crust
2,3%
Abundance in Universe
0,002%
Sodium
Кредити на слика: Wikimedia Commons (Dnn87)
Sodium metal from the Dennis s.k collection
CAS Number
7440-23-5
PubChem CID Number
5360545
Атомски Својства
Атомски полупречник
186 pm
Ковалентен полупречник
166 pm
Електронегативност
0,93 (Полингова скала)
Ionization Potential
5,1391 eV
Atomic Volume
23,7 cm3/mol
Thermal Conductivity
1,41 W/cm·K
Oxidation States
-1, 1
Applications
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 metal should be handled with great care as it cannot be maintained in an inert atmosphere
Isotopes
Stable Isotopes
23Na
Unstable Isotopes
18Na, 19Na, 20Na, 21Na, 22Na, 24Na, 25Na, 26Na, 27Na, 28Na, 29Na, 30Na, 31Na, 32Na, 33Na, 34Na, 35Na, 36Na, 37Na