NA(a) What is a group in the periodic table in which part of a group would you separately expect elements to have (i) the greatest metallic character (ii) the largest atomic size? (b) In what respects do the properties of group 1 elements differ from
What happens to number of valence electrons in atoms of elements as we go down a group of the periodic table ? View Solution Exams IIT JEE NEET UP Board Bihar Board CBSE Free Textbook Solutions KC Sinha Solutions for Maths Cengage Solutions for Maths ...
A. Groups B. Periods C. Elements D. Properties 相关知识点: 试题来源: 解析 B。原因:文章中明确提到“The horizontal rows or periods show how the properties of elements change as you move across.”,即水平行被称为 periods。反馈 收藏
Which group in the periodic table contains elements with the valence electron configuration of ns2np1? In what group of the periodic table is the element with the electron configuration (Ar)4s23d104p2? What is the valence electron configuration for the element in Period 4, Group 6A?...
百度试题 结果1 题目25 Selenium, Se, is in the same group of the Periodic Table as sulfur, S What is the formula of sodium selenide? A ANa2Se BNaSeO C Na2SeO D Na SeO: 相关知识点: 试题来源: 解析 A 反馈 收藏
Groups are often more indicative of an element's properties than periods, as elements in the same group react similarly. For example, noble gases in Group 18 are all inert because their outer shell is full, making them unreactive. In contrast, the transition across a period from one element...
Periodic table is the arrangement of all the known chemical elements by their atomic number and electronic configurations. There are seven periods and sixteen groups present in a periodic table. Elements with similar properties are found in the same group of the periodic table....
The outermost layers have the same number of electron.;They have the similar chemical properties.;The number of electron layers from top to bottom gradually increases.;The atomic radius from top to bottom gradually increases.
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 _...
Periodic tableMadelung ruleThis article considers two important traditions concerning the chemical elements. The first is the meaning of the term "element" including the distinctions between element as basic substance, as simple substance and as combined simple substance. In addition to briefly tracing ...