主族(main group/group A)指周期表上从左往右数的第1～2,13～18竖列的元素(或s区+p区元素),一列为一族. 主族元素用罗马数字加大/小写的字母“A”来表示,例如新标准的第2族在主副族标准是“IIA族(group IIA) ”。 副族(group B)指周期表上从左往右数的3～12竖列元素(或f区+d区+ds区元素), 只...
Iron series-the fourth series of the periodic tableSharma, DeeptiHomoeopathic Heritage
Nonmetalsrepresent thetop rightof the periodic table. These elements are usually gases at room temperature and tend to form anions. Non-metals have the highest electronegativity of any of the elements, meaning they steal electrons. What are halogens? The halogen family is the maingroup sevenon ...
Iron 101.07 45 Co Cobalt 102.91 46 Ni Nickel 106.42 47 Cu Copper 107.87 48 Zn Zinc 112.41 49 Ga Gallium 114.82 Ge Germanium 50 118.71 51 As Arsenic 121.76 Se Selenium 52 127.6 Br Bromine 53 126.9 Kr Krypton 54 131.29 5 Rb Rubidium 55 132.91 Sr Strontium 56 137.33 Y Zr Nb Niobium 73 ...
2 Transition Metals More so than any of the other major groups of elements in the periodic table, the transition metals have shaped human history and have been the workhorses of industry. The discovery of metallic copper ended the St...
Most schools teach using a form of the periodic table that shows only 8 group numbers. On this form of the periodic table, the group number gives us what information about an element? The number of protons in the nucleus The number of neutrons in the nucleus ...
may be formally accepted by the end of 2016. the element has the highest atomic mass and highest atomic number of all elements in the periodic table. it has very unstable radioactive atomic nuclei and is predicted to be in a solid state as it has realistic effects. in the periodic table...
periodic table of (chemical) ele ments 【化】 元素周期表相关短语 subgroup (元素周期表上的) 族 zero group (元素周期表中的) 零族 iron family (元素) 铁族 stabilizing element (阻止石墨化元素) 稳定性元素 diadic (原子,基,元素) 二价 nickel(Ni) (化学元素) 镍 natrium (Na) (化学元素) 钠 ref...
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...
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...