Natrij

11
Na
Skupina
1
Perioda
3
Blok
s
Protons
Electrons
Neutrons
11
11
12
General Properties
Vrstno število
11
Atomska teža
22,98976928
Mass Number
23
Kategorija
Alkalijske kovine
Barva
Silver
Radioactive
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.
Electrons per shell
2, 8, 1
Razporeditev elektronov
[Ne] 3s1
Na
Sodium burns in air with a brilliant yellow flame
Physical Properties
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
Abundance in Earth's crust
2,3%
Abundance in Universe
0,002%
Sodium
Zasluge za slike: Wikimedia Commons (Dnn87)
Sodium metal from the Dennis s.k collection
CAS Number
7440-23-5
PubChem CID Number
5360545
Atomic Properties
Atomski polmer
186 pm
Kovalentni polmer
166 pm
Elektronegativnost
0,93 (Paulingova lestvica)
Ionization Potential
5,1391 eV
Atomic Volume
23,7 cm3/mol
Toplotna prevodnost
1,41 W/cm·K
Oksidacijska stanja
-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