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Cobalt

Elementị 27 · 58.933 u

Nhazi metal d-block Oge 4 Ụlọọrụ 9 Òtù na RT Wikipedia →

Cobalt bụ a hard, lustrous transition metal mara maka ya blue compounds na-eji na batrị.

Nkarachọ

Atomic mass58.933 u
Mgbatị8.9 g/cm³
Mmalite1768.0 K
Nhazi3200.0 K
NhaziN'ogbe, n'ogbe, n'ogbe-acha odo odo metallic
Oge n'ime ụlọÒtù

Ihenhọrọ ndị ahụ

Elektrọn1.88 (Pauling)
Nhazi760.4 kJ/mol
Elektrọn63.7 kJ/mol
Oxygenation state+2, +3, +4, +5

Ihenhọrọ nke atom

Nhazi[Ar] 3d7 4s2
Atomic Radius125.0 pm
Covalent Radius126.0 pm
Van der Waals Radius192.0 pm

Ndesịta ozi ndị ahụ

E chọpụtara site naGeorg Brandt
Ụbọchị emeredịkachọrọ1735
EbeStockholm
Aha mgbe ahụGerman 'kobald' pụtara goblin mọọbụ evil spirit

Báà Cobalt

Cobalt bụ a hard, lustrous, silver-grey metal na a bluish tinge. Cobalt compounds na-emepụta deep blue agba na glass na ceramics. Ọ bụ a mkpa trace elementị dị ka a component nke vitamin B12.

Usoroiheomume

Lithium-ion batrị, superalloys maka jet engines, blue pigments, magnetic alloys, na vitamin B12.

Eziokwu dị ụtọ

Cobalt na-enweta aha ya site na 'kobold' (German maka goblin), n'ihi na ndị na-agba goblins maka ihe na-egbu egbu mgbe cobalt ore na-emegharị.

Isotopes

Nkebi Afọ́ọ̀ltụ̀ Half-Life Òtù
59 1.0% - Ee

Nhazi

[Ar] 3d7 4s2

Tụnyere

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