Natrium
11
Na
Kumpulan
1
Kala
3
Blok
s
Proton
Elektron
Neutron
11
11
12
Ciri-Ciri Am
Nombor atom
11
Berat atom
22.98976928
Nombor jisim
23
Kategori
Logam alkali
Warna
Perak
Radioaktif
Tidak
From the English word, soda; Medieval Latin, sodanum: a headache remedy
Struktur hablur
Pusat Badan Kubik
Sejarah
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.
Bilangan elektron per petala
2, 8, 1
Konfigurasi elektron
[Ne] 3s1
Sodium burns in air with a brilliant yellow flame
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
0.971 g/cm3
Takat lebur
370.87 K | 97.72 °C | 207.9 °F
Takat didih
1156.15 K | 883 °C | 1621.4 °F
Haba pelakuran
2.6 kJ/mol
Haba pengewapan
97.7 kJ/mol
Muatan haba molar
1.228 J/g·K
Banyak pada kerak bumi
2.3%
Banyak pada alam semesta
0.002%
Nombor CAS
7440-23-5
Nombor PubChem CID
5360545
Ciri-Ciri Atom
Jejari atom
186 pm
Jejari kovalen
166 pm
Keelektronegatifan
0.93 (Skala Pauling)
Kebolehan mengion
5.1391 eV
Isipadu atom
23.7 cm3/mol
Daya pengaliran terma
1.41 W/cm·K
Keadaan pengoksidaan
-1, 1
Aplikasi
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
Isotop
Isotop stabil
23NaIsotop tidak stabil
18Na, 19Na, 20Na, 21Na, 22Na, 24Na, 25Na, 26Na, 27Na, 28Na, 29Na, 30Na, 31Na, 32Na, 33Na, 34Na, 35Na, 36Na, 37Na