Kobalt
27
Co
Guruh
9
Davr
4
Block
d
Protonlar
Elektronlar
Neytronlar
27
27
32
General Properties
Atom raqami
27
Atom massasi
58,933195
Mass Number
59
Turkum
Oʻtish metallar
Ranggi
Gray
Radioaktivlik
Yoʻq
From the German word Kobald, goblin or evil spirit; also from the Greek cobalos, mine
Crystal Structure
Simple Hexagonal
Tarix
Cobalt compounds have been used for centuries to impart a rich blue color to glass, glazes and ceramics.
The element was first isolated by Swedish chemist George Brandt in 1735.
He showed it was the presence of the element cobalt that caused the blue color in glass, not bismuth as previously thought.
The element was first isolated by Swedish chemist George Brandt in 1735.
He showed it was the presence of the element cobalt that caused the blue color in glass, not bismuth as previously thought.
Electrons per shell
2, 8, 15, 2
Elektron konfiguratsiyasi
[Ar] 3d7 4s2
Supplemental colbalt is essential in sheep's diets to improve the wools quality
Physical Properties
Phase
Qattiq modda
Zichlik
8,86 g/cm3
Erish harorati
1768,15 K | 1495 °C | 2723 °F
Qaynash harorati
3200,15 K | 2927 °C | 5300,6 °F
Heat of Fusion
16,2 kJ/mol
Heat of Vaporization
375 kJ/mol
Solishtirma issiqlik sigʻimi
0,421 J/g·K
Abundance in Earth's crust
0,003%
Abundance in Universe
0,0003%
Image Credits: Wikimedia Commons (Alchemist-hp)
Pure cobalt chips, electrolytically refined, as well as a high purity cobalt cube for comparison
CAS Number
7440-48-4
PubChem CID Number
104730
Atomic Properties
Atom radiusi
125 pm
Kovalentlik radiusi
126 pm
Elektrmanfiylik
1,88 (Poling boʻyicha)
Ionization Potential
7,881 eV
Molyar hajm
6,7 cm3/mol
Issiqlik oʻtkazuvchanlik
1 W/cm·K
Oksidlanish darajasi
-1, 1, 2, 3, 4, 5
Applications
Cobalt is used in the preparation of magnetic, wear-resistant and high-strength alloys.
Cobalt is widely used in batteries and in electroplating.
Radioactive 60Co is used in the treatment of cancer.
A solution of the chloride is used as a sympathetic ink.
Cobalt is widely used in batteries and in electroplating.
Radioactive 60Co is used in the treatment of cancer.
A solution of the chloride is used as a sympathetic ink.
Cobalt and its compounds are considered to be slightly toxic
Izotoplar
Barqaror izotoplar
59CoBeqaror izotoplar
47Co, 48Co, 49Co, 50Co, 51Co, 52Co, 53Co, 54Co, 55Co, 56Co, 57Co, 58Co, 60Co, 61Co, 62Co, 63Co, 64Co, 65Co, 66Co, 67Co, 68Co, 69Co, 70Co, 71Co, 72Co, 73Co, 74Co, 75Co