78.1. THE PERIODIC TABLE 元素周期表 (图片可点击放大) In this section, we will explore the periodic table, which organizes chemical elements and provides valuable information about their properties and relationships. Understanding the periodic...
Group_(periodic_table)Group (periodic table)Family
Radium is a radioactive element with atomic number 88 and symbol Ra in the periodic table. To learn more about the isotopes of radium, its properties, uses, and health effects visit Byju's
A column of elements down the table is called a group. There are18 groups in the standard periodic table. Each group has a number: from 1 to18. Elements in a group have electrons arranged in similar ways, which givesthem similar chemical properties. For example, group 18 is known as the...
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 ...
periodicgroupmetalselementsilearnperiod -1 ThePeriodicTable E-LearningUnit1 PatternsinthePeriodicTable -2 ArrangementofElements ElementsarearrangedinthePeriodicTablein orderofprotonnumbersprotonnumbers,whichincreases fromlefttorightacrosstheTable. -3 ArrangementofElements AhorizontalrowofelementsinthePeriodic Table...
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...
aCertain groupings of elements in the periodic table are designated by special names. The heavy, stepped, diagonal line on the table divides the elements into two major classed. Those to the left of the line are called metals, and those to the right, nonmetal. GroupⅠA elements are known...
图片参考：upload.wikimedia/ *** /zh/c/c3/Periodic-table Standard periodic table Group → 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ↓ Period 1 1 H 2 He 2 3 Li 4 Be 5 B 6 C 7 N 8 O 9 F 10 Ne 3 11 Na 12 Mg 13 Al 14 Si 15 P 16 S 17 Cl...
Hence the structure of the table. Since the outermost electrons determine chemical properties, those tend to be similar within groups. Elements adjacent to one another within a group have similar physical properties, despite their significant differences in mass. Elements adjacent to one another within...