Natrij
11
Na
Skupina
1
Perioda
3
Blok
s
Protoni
Elektroni
Nevtroni
11
11
12
Splošne lastnosti
Vrstno število
11
Atomska teža
22,98976928
Masno število
23
Kategorija
Alkalijske kovine
Barva
Srebrna
Radioaktivno
Ne
From the English word, soda; Medieval Latin, sodanum: a headache remedy
Kristalna struktura
Telesno centrirana kubična
Zgodovina
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.
Elektroni po lupinah
2, 8, 1
Razporeditev elektronov
[Ne] 3s1
Sodium burns in air with a brilliant yellow flame
Fizikalne lastnosti
Faza snovi
Trdnina
Gostota
0,971 g/cm3
Tališče
370,87 K | 97,72 °C | 207,9 °F
Vrelišče
1156,15 K | 883 °C | 1621,4 °F
Talilna toplota
2,6 kJ/mol
Izparilna toplota
97,7 kJ/mol
Toplotna kapaciteta
1,228 J/g·K
Zastopanost v Zemljini skorji
2,3%
Zastopanost v vesolju
0,002%
CAS številka
7440-23-5
PubChem CID številka
5360545
Atomske lastnosti
Atomski polmer
186 pm
Kovalentni polmer
166 pm
Elektronegativnost
0,93 (Paulingova lestvica)
Ionizacijski potencial
5,1391 eV
Atomski volumen
23,7 cm3/mol
Toplotna prevodnost
1,41 W/cm·K
Oksidacijska stanja
-1, 1
Uporabe
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
Izotopi
Stabilni izotopi
23NaNestabilni izotopi
18Na, 19Na, 20Na, 21Na, 22Na, 24Na, 25Na, 26Na, 27Na, 28Na, 29Na, 30Na, 31Na, 32Na, 33Na, 34Na, 35Na, 36Na, 37Na