百度试题 结果1 题目What is a row of elements on the periodic table called? A. octave B. period C. group D. transition 相关知识点: 试题来源: 解析 B 反馈 收藏
结果1 题目What are the horizontal rows in the periodic table called? A. Groups. B. Periods. C. Elements. D. Compounds. 相关知识点: 试题来源: 解析 B。中文解析:“The periods are horizontal rows”,周期表中的水平行称为周期。反馈 收藏 ...
百度试题 结果1 题目What is the second element on the periodic table of elements? A.HydrogenB.Helium 相关知识点: 试题来源: 解析 B 反馈 收藏
解析 Ans. The d block elements are in the middle of S and p blocks, comprising the groups 3to 12.They are the four rows of elements in the periods 4h (3d series), 5th (4d series), 6th ( 5d series)and 7h ( 6d series).
The Periodic Table is a table of all the elements we know about today. Elements are placed in order of atomic number ( number of protons in the nucleus ).
What do the elements in each column of the periodic table have in common? What is helium in the periodic table? What is lithium in the periodic table? Most elements on the periodic table are what? What is between metals and nonmetals on the periodic table?
The periodic table of the elements is a representation of all known elements in an orderly array. The periodic law presented by Dmitri Mendeleev in 1869 stated
athe file is either damaged orwa not installed correctly.please uninstall then installing it again 文件是任一损坏的orwa没安装的correctly.please卸载再然后安装它[translate] a一直;始终 Continuously; Throughout[translate] asituations shirts 情况衬衣[translate] ...
What is mainly discussed in the passage? A. The biology’s periodic table. B. The possible influence of decoding human genome on human’s life. C. Moral dilemmas posed by decoding human genome. D. Gene E. xpression monitoring. 相关知识点: ...
E. R. Scerri, What is an element? What is periodic table? And what does quantum mechanics contrib- ute to the question?, Found. Chem., 14 (2012), pp. 69-81. [26] E. R. Scerri, A critique of Weisberg‟s view on the periodic table and some speculations on the nature of ...