百度试题 结果1 题目There are ___ main groups in the periodic table. A. 7 B. 8 C. 9 D. 10 相关知识点: 试题来源: 解析 B。元素周期表有 8 个主族。反馈 收藏
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 _...
This is a series of lectures in videos covering Chemistry topics taught in schools. Groups of the Periodic Table The following episode looks at 4 main groups of the Periodic Table: Alkali metals, Alkaline Earth metals, Halogens and Noble gases. ...
What is the name of an element in one of the 14 groups shown separately at the bottom of the periodic table? What is the name of the Group of the Periodic Table in which all the elements have a valence shell electron configuration ns^2np^0? ...
periodic rates───周期性利率 periodic tenancies───定期租赁;定期租借 additive groups───n.[数]加法群 media groups───媒体组 nominal groups───名词词组 periodic acids───过碘酸;[无化]高碘酸 双语使用场景 wafers are found in Groups III and V of the Periodic Table of the Elements.─...
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 ...
Periodic table, in chemistry, the organized array of all the chemical elements in order of increasing atomic number. When the elements are thus arranged, there is a recurring pattern called the ‘periodic law’ in their properties, in which elements in t
百度试题 结果1 题目The rows in the periodic table are called ___. A. groups B. periods C. elements D. properties 相关知识点: 试题来源: 解析 B。解析:文章中明确提到“The rows are called periods.”。 反馈 收藏
Periodic table - Elements, Groups, Properties: The noble gases—helium, neon, argon, krypton, xenon, radon, and oganesson—have the striking chemical property of forming few chemical compounds. This property would depend upon their possessing especially
What are the 7 periods on the periodic table? There are 7 periods on the periodic table, numbered down the left side of the table. These periods are named according to their numbers: period 1, period, 2, etc. What is the difference between a group and a period in the periodic table?