论文部分内容阅读
宇宙中含量最多的元素是氢地壳中含量最多的元素是氧地壳中含量最多的金属元素是铝地壳中含量最少的元素是砹空气中含量最多的元素是氮空气中含量最多的稀有气体元素是氩海水中含量最多的金属元素是钠海水中含量最多的放射性元素是镭原子半径最小的元素是氢原子半径最大的元素是钫同位素最多的元素是锡(10种)单质密度最小的元素是氢单质密度最小的金属元素是锂单质密度最大的元素是锇单质密度最大的非金属元素是碲常温下气体单质密度最大的元素是氡单质熔沸点最高的元素是碳(石墨)
The most abundant elements in the universe are the most abundant elements in the hydrogen crust. The most abundant elements in the oxygen crust are the most abundant elements in the aluminum crust. 砹 The most abundant elements in the air are nitrogen. The most abundant rare gases in the air are The most abundant metal elements in argon seawater are the most abundant radioactive elements in sodium seawater. The elements with the smallest radius of radium are the elements with the largest radius of hydrogen atoms. The elements with the largest radius are the helium isotopes. The most abundant elements are tin (10 species) The element with the lowest density is hydrogen. The element with the smallest element density is the element with the highest density of lithium. The element with the highest density of elemental element is the element with the highest density of elemental element at normal temperature. The element with the highest density is the element with the highest boiling point. The element with the highest boiling point is carbon (graphite).