Periodic Table 元素周期表(相对分子量) PERIOD 1 IA 18 VIIIA 1 1.008 2 4 1 H Group IUPAC Group CAS Metal Semi Metal Non Metal He Alkaline Metal Chalcogens Element Hydrogen 2 IIA 1 IA Alkaline Earth Metal Halogens Element 13 IIIA 14 IVA 15 VA 16 VIA 17 VIIA Helium 3 6.94 4 9.01 Ato...
Periodic Table概述 Elements 1Hydrogen 氢 1H:period1,groupIA/1,nonmatel 原子量1.00794电离能1312.0eV电负性2.20氧化态+1,-1电子构型1s1原子半径0.79Å离子半径0.012Å熔点-258.975︒C沸点-252.732︒C氢是一种化学元素，在元素周期表中位于第一位。氢通常的...
PERIOD 1 1 IA 1.008 18 2 Group IUPAC 2 4 IIA 9.01 1 1 Group CAS IA 1.008 VIIIA 4 1 H Hydrogen 3 6.94 Atomic Number Atomic Mass Atomic Symbol 2 Li 11 Lithium 22.99 Be Beryllium 12 24.31 H Hydrogen Atomic Name Metal Alkaline Metal Alkaline Earth Metal Transition Metal Lanthanide ...
1、Elements 1 Hydrogen 氢氢1 H:period 1,group IA/1,nonmatel原子量 1.00794电离能 1312.0 eV 电负性 2.20氧化态 +1,-1电子构型 1s1原子半径 0.79 离子半径 0.012 熔点 -258.975C沸点 -252.732C氢是一种化学元素,在元素周期表中位于第一位。氢通常的单质形态是氢气。它是无色无味无臭,极易燃烧的由双...
Periodic table, in chemistry, the organized array of all the chemical elements in order of increasing atomic number. When the elements are thus arranged, there is a recurring pattern called the ‘periodic law’ in their properties, in which elements in t
元素周期表 - Periodic Table of Elements 1.1 原子与元素 - Atom and Element 1.2 周期 - Period 1.3 族 - Group 1.4 成组元素 - Collective of Elements 基础化合物的命名构词法 - Basic Compound Nomenclature 2.1 物质的分类 - Classification of Matter ...
Theperiodic tableof elements is arranged based on a series of regular polyhedron. 指出元素周期表的排列规则来自正多面体. 期刊摘选 The size of atoms decreases from left to right across a period in theperiodic table. 在周期表中沿着周期从左到右原子的半径递减. ...
periodic tableperiodic table from The Columbia Encyclopedia, 6th ed.. Read periodic table from The Columbia Encyclopedia, 6th ed. now at Questia.The Columbia Encyclopediath ed
In theperiodic tableof the elements, elements are arranged in a series of rows (or periods) so that those with similar properties appear in vertical columns. Elements of the same period have the same number of electron shells; with each group across a period, the elements have one more prot...
1IA 1 1 H X 18VIIIA 2 He X 2 3 Li 2IIA 4 Be 13IIIA 5 B 14IVA 6 C 15VA 7 N 16VIA 8 O 17VIIA 9 F 10 Ne X 3 11 Na 12 Mg 13 Al 14 Si 15 P 16 S 17 Cl 18 Ar X Period4 19 K 20 Ca 3IIIB 21 Sc 4IVB 22 Ti 5VB 23 V ...