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.