铁氏三兄弟是?
不知道也
铁、钴、镍。
元素符号:Fe
中文名称:铁
英文名称:Iron
原子序数:26
原子量:55.85
外围电子排布:3d6 4s2
核外电子排布:2,8,14,2
常见化合价:+2,+3
密度:7.86
溶点:1535
沸点:2861
所属周期:4
所属族数:VIII
原子半径:1.72
离子半径:0.55(+3)
共价半径:1.17
同位素及放射性:Fe-54 *Fe-56 Fe-57 Fe-58
发现人:Known to the ancients.
发现时间:
发现地点:
名称由来:Anglo-Saxon: iron; symbol from Latin: ferrum (iron).
元素描述:Malleable, ductile, silvery-white metal. Fourth most abundant element in the earth's crust (56,300 ppm). Ninth most abundant element in the universe.
元素来源:Obtained from iron ores. Pure metal produced in blast furnaces by layering limestone, coke and iron ore and forcing hot gasses into the bottom. This heats the coke red hot and the iron is reduced from its oxides and liquified where it flows to the bottom
元素用途:Used in steel and other alloys. Essential for humans. It is the chief constituent of hemoglobin which carries oxygen in blood vessels. Its oxides are used in magnetic tapes and disks.
Co
元素符号:Co
中文名称:钴
英文名称:Cobalt
原子序数:27
原子量:58.93
外围电子排布:3d7 4s2
核外电子排布:2,8,15,2
常见化合价:+2,+3
密度:8.9
溶点:1495
沸点:2927
所属周期:4
所属族数:VIII
原子半径:1.67
离子半径:0.65(+2)
共价半径:1.16
同位素及放射性:Co-59
发现人:George Brandt
发现时间:1739
发现地点:瑞典
名称由来:German: kobold (goblin).
元素描述:Hard, ductile, lustrous bluish-gray metal. Exists in the earth's curst in cocentrations of about 25 ppm. It has remarkable magnetic properties.
元素来源: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.
元素用途:Used in many hard alloys; for magnets, ceramics and special glasses. Remains hard up to 982癈. Radioactive cobalt-60 is used in cancer therapy.
Ni
元素符号:Ni
中文名称:镍
英文名称:Nickel
原子序数:28
原子量:58.69
外围电子排布:3d8 4s2
核外电子排布:2,8,16,2
常见化合价:+2,+3
密度:8.90
溶点:1453
沸点:2913
所属周期:4
所属族数:VIII
原子半径:1.62
离子半径:0.69(+2)
共价半径:1.15
同位素及放射性:*Ni-58 Ni-60 Ni-61 Ni-62 Ni-64
发现人:Axel Cronstedt
发现时间:1751
发现地点:瑞典
名称由来:German: kupfernickel (false copper).
元素描述:Hard, malleable, silvery-white metal. Found in the earth's crust in portions averaging 70 ppm. It can be polished to a lustrous finish. Virtually no corrosion under normal conditions.
元素来源:Chiefly found in pentlandite [(Ni,Fe)9S8] ore. The metal is produced by heating the ore in a blast furnace which replaces the sulfur with oxygen. The oxides are then treated with an acid that reacts with the iron not the nickel.
元素用途:Used in electroplating and metal alloys because of its resistance to corrosion. Also in nickel-cadmium
