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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 batteries; as a catalyst and for coins.