Natrium
11
Na
Gruppe
1
Periode
3
Blokk
s
Protons
Electrons
Neutrons
11
11
12
Generelle eigenskapar
Atomnummer
11
Atommasse
22,98976928
Mass Number
23
Kategori
Alkalimetall
Farge
Silver
Radioactive
Nei
From the English word, soda; Medieval Latin, sodanum: a headache remedy
Krystallstruktur
Body Centered Cubic
Historie
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.
Elektron per energinivå
2, 8, 1
Elektronkonfigurasjon
[Ne] 3s1
Sodium burns in air with a brilliant yellow flame
Fysiske eigenskapar
Tilstandsform
Fast stoff
Tettleik
0,971 g/cm3
Smeltepunkt
370,87 K | 97,72 °C | 207,9 °F
Kokepunkt
1156,15 K | 883 °C | 1621,4 °F
Smeltevarme
2,6 kJ/mol
Fordampingsvarme
97,7 kJ/mol
Spesifikk varmekapasitet
1,228 J/g·K
Abundance in Earth's crust
2,3%
Abundance in Universe
0,002%
CAS Number
7440-23-5
PubChem CID Number
5360545
Atom eigenskapar
Atomradius
186 pm
Kovalent radius
166 pm
Elektronegativitet
0,93 (Paulings skala)
Ioniseringspotensial
5,1391 eV
Molart volum
23,7 cm3/mol
Termisk konduktivitet
1,41 W/cm·K
Oksidasjonstrinn
-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 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
23NaUnstable Isotopes
18Na, 19Na, 20Na, 21Na, 22Na, 24Na, 25Na, 26Na, 27Na, 28Na, 29Na, 30Na, 31Na, 32Na, 33Na, 34Na, 35Na, 36Na, 37Na