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 _...
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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
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Learn about the organization of the periodic table into groups and periods and how these differ. Also learn the history of the periodic table and...
What are the 8 groups of the periodic table? The 8 groups of the periodic table are the Alkali Metals, Alkaline Earth Metals, Boron Family, Carbon Family, Nitrogen Family, Oxygen Family, Halogens, and Noble Gases. What are the 7 periods on the periodic table? There are 7 periods on the...
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
The periodic table can be used by chemists to observe patterns,and relationships between the elements. There are 3 main groups in in thePeriodic Table; metals, metalloids, and gases. For example, elements to thebottom and far left of the table are the most metallic, and elements on the top...
Periodic Table Groups:The periodic table organizes the chemical elements according to atomic number in a system of rows, columns and blocks. The columns are referred to as groups because they group up elements that share common important chemical properties. One such property is the number of ...
The following episode looks at 4 main groups of the Periodic Table: Alkali metals, Alkaline Earth metals, Halogens and Noble gases. Learn about Junior Chemistry: The Periodic Table Chemistry Group 1 - Alkali Metals Chemistry Group 7 - Halogens ...