特性

CAS Number7440-48-4
PubChem CID104730
原子半径125
モル体積6.7
原子量58.933
ブロックd
沸点2,927
Bulk Modulus
カテゴリ遷移元素
結晶構造六方最密構造
灰色
共有結合半径126
密度8.86
Electrical Resistivity
電子配置[Ar] 3d7 4s2
電子殻2, 8, 15, 2
電気陰性度1.88
Electrons27
9
融解熱16.2
蒸発熱375
イオン化エネルギー7.881
Magnetic Ordering
Magnetic Susceptibility
質量58.933
Mass Number27
融点1,495
名称コバルト
中性子32
原子番号59
酸化数-1, 1, 2, 3, 4, 5
周期4
固体
Poisson Ratio
陽子27
Shear Modulus
熱容量0.421
記号Co
熱伝導率1
Van der Waals radius
Young's Modulus
天然存在比
地殻中における存在比0.003%
宇宙空間における存在比0.0003%
Co コバルト 27 58.933195 9 4 d 27 1495.0 2870.0 [Ar] 3d7 4s2 2 8 15 2 8.9 0.003% Gray Hexagonal 1.9 1.84 {"1":"760.4","2":"1648","3":"3232","4":"4950","5":"7670","6":"9840","7":"12440","8":"15230","9":"17959","10":"26570","11":"29400","12":"32400","13":"36600","14":"39700","15":"42800","16":"49396","17":"52737","18":"134810","19":"145170","20":"154700","21":"167400","22":"178100","23":"189300","24":"204500","25":"214100","26":"920870","27":"966023"} 761 63.7 126 +2,3 1.25 6.7 16.19 373.3 0.421 100.0 0 Solid, Ferromagnetic, Conductor, TransitionMetal, Metal, Stable, Natural KO-bolt Hard, ductile, lustrous bluish-gray metal. Exists in the earth's curst in cocentrations of about 25 ppm. It has remarkable magnetic properties. Used in many hard alloys; for magnets, ceramics and special glasses. Remains hard up to 982°C. Radioactive cobalt-60 is used in cancer therapy. Occurs in compounds with arsenic, oxygen and sulfur as in cobaltine (CoAsS) and linneite (Co3S4). Pure cobalt is obtained as a byproduct of refining nickel, copper and iron. V6ljxByu9ng Cobalt
Around 1630, chlorine was recognized as a gas by the Belgian chemist and physician Jan Baptist van Helmont.

Elemental chlorine was first prepared and studied in 1774 by Swedish chemist Carl Wilhelm Scheele.

By 1810, the scientific consensus was that chlorine was actually a compound that contained oxygen.

In 1811, Sir Humphry Davy concluded the new gas was in fact a new element. From the Greek word chloro, greenish yellow 27 1735 Georg Brandt Sweden From the German word "kobald" meaning "goblin" or evil spirit

塩素の同位体

Standard Atomic Weight

58.933194(4)

安定同位体

59Co

不安定同位体

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

Elemental chlorine at high concentrations is extremely dangerous and poisonous
Tree frogs have a chlorine compound in their skin that is a very powerful pain killer
Chlorine is used for producing safe drinking water.

It is also extensively used in the production of paper products, dyestuffs, textiles, petroleum products, medicines, antiseptics, insecticides, food, solvents, paints, plastics, and many other consumer products.

Chlorinated compounds are used mostly for sanitation, pulp bleaching, disinfectants, and textile processing.