元素简介梦见车翻了1 氢 H hydrogen氢一种无色，易燃的气体物质，在所有气体中最轻，而宇宙中最多用来生产合成氨和甲醇，提炼石油，氢化有机物质作为收缩的气体，用在氧氢焰熔接器和火箭燃料中。原子序数为1；原子量为1.00797；熔点为-259.14℃；沸点-252.8℃；零度时的密度是0.08987克/公升；原子价为12 氦
Unit 5The Periodic TableAs our picture of the atom becomes more detailed, we find ourlves in a dilemma.当我们对原子了解的越来越详细时，我们发现我们其中处在两难之中己。With more than 100 elements to deal with, how can we keep all t
Unit 5The Periodic Table警戒色As our picture of the atom becomes more detailed, we find ourlves in a dilemma.当我们对原子了解的越来越详细时，我们发现我们其中处在两难之中己。With more than 100 elements to deal with, how can we keep al
Unit 5一件有趣的事作文500字绘本怎么画The Periodic TableAs our picture of the atom becomes more detailed, we find ourlves in a dilemma.当我们对原子了解的越来越详细时，我们发现我们其中处在两难之中己。With more than 100 elements to deal with, how
国际标准原子量———————————————————————————————— 作者：———————————————————————————————— 日期： At No Symbol NameAtomic WtNotes1HHydrogen1.0083, 62HeHelium4.002602(2)1, 23LiLith
化学元素的序数、原子量、价电子排布式、原子半径与电负性 Atomic Numbers、Atomic Weights、Electron Configurations、Atomic Radius and Electronegativities of Elements 中文名(Chinename)英文名(Englishname)符号(Symbol)原子序数(Atomic number)原子量(A
