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 are the horizontal rows in the periodic table called? A. Groups B. Blocks C. Periods D. Orbitals 相关知识点: 试题来源: 解析 C。原因:文章中明确提到“The horizontal rows are called periods.”。 反馈 收藏
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
A.The outermost layers have the same number of electron.B.They have the similar chemical properties.C.The number of electron layers from top to bottom gradually increases.D.The atomic radius from top to bottom gradually increases.相关知识点: 试题...
What group in the periodic table has the valence-shell configuration ns2np4?Electron Orbitals:While the orbitals in which electrons from elements in the periodic table can be found in are the s, p, d, and f orbitals, there are theoretical g and h orbitals....
Q.What is meant by groups and periods in the periodic table? Q.What are groups of the modern periodic table .What does the 'group number' signify Q. In the modified Mendeleev’s periodic table,___ groups and ___ periods are present, whereas in modern periodic table,___ groups and _...
Each element is a pure substance and its smallest representative unit is a single atom. The elements are organized in the periodic table. Each element is present in a certain row and column, known as periods and groups respectively. Both the period and group positions indicate certain important...
The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number, oganesson. The atomic number of an element is the number of protons in the nucleus of an atom ...
Scerri, Eric
single column of the periodic table, although the transition elements consist of several columns, plus the elements located below the main body of the table. An example of an element family is the nitrogen group or pnictogens. Note that this element family includes nonmetals, semimetals, and ...