谁能介绍一下Na元素

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  • 元素符号:Na

    中文名称:钠

    英文名称:Sodium

    原子序数:11

    原子量:22.99

    外围电子排布:3s1

    核外电子排布:2,8,1

    常见化合价:+1

    密度:0.971

    溶点:97.81

    沸点:882.9

    所属周期:3

    所属族数:IA

    原子半径:2.23

    离子半径:1.02(+1)

    共价半径:1.54

    同位素及放射性:Na-23

    发现人:Sir Humphrey Davy

    发现时间:1807

    发现地点:英格兰

    名称由来:Medieval Latin:sodanum,(headache remedy); symbol from Latin natrium,(sodium carbonate).

    元素描述:Soft silvery-white metal.Sixth most abundant element in the earth's crust.Burns in air with a brilliant white flame.

    元素来源:Obtained by electrolysis of melted sodium chloride (salt),borax and cryolite.

    元素用途:There are few uses for the pure metal,however its compounds are used in medicine,agriculture and photography.Sodium chloride (NaCl) is table salt.Liquid sodium is sometimes used to cool nuclear reactors.