Natrium

11
Na
Grupp
1
Period
3
Block
s
Protoner
Electrons
Neutroner
11
11
12
Generella Egenskaper
Atomnummer
11
Atommassa
22,98976928
Mass Number
23
Kategori
Alkalimetaller
Färg
Silver
Radioaktiv
Nej
From the English word, soda; Medieval Latin, sodanum: a headache remedy
Kristallstruktur
Rymdcentrerat kubisk
Historia
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.
Elektroner per skal
2, 8, 1
Elektronkonfiguration
[Ne] 3s1
Na
Sodium burns in air with a brilliant yellow flame
Fysikaliska Egenskaper
Aggregationstillstånd
Fast
Densitet
0,971 g/cm3
Smältpunkt
370,87 K | 97,72 °C | 207,9 °F
Kokpunkt
1156,15 K | 883 °C | 1621,4 °F
Smältvärme
2,6 kJ/mol
Ångbildningsvärme
97,7 kJ/mol
Specifik värmekapacitet
1,228 J/g·K
Abundance in Earth's crust
2,3%
Abundance in Universe
0,002%
Sodium
Bildkrediter: Wikimedia Commons (Dnn87)
Sodium metal from the Dennis s.k collection
CAS Number
7440-23-5
PubChem CID Number
5360545
Atomära Egenskaper
Atomradie
186 pm
Kovalent radie
166 pm
Elektronegativitet
0,93 (Paulingskalan)
Jonisationspotential
5,1391 eV
Molvolym
23,7 cm3/mol
Värmeledningsförmåga
1,41 W/cm·K
Oxidationstillstånd
-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
Isotoper
Stabila isotoper
23Na
Instabila isotoper
18Na, 19Na, 20Na, 21Na, 22Na, 24Na, 25Na, 26Na, 27Na, 28Na, 29Na, 30Na, 31Na, 32Na, 33Na, 34Na, 35Na, 36Na, 37Na