Periods in the periodic table run horizontally and indicate the number of electron shells; Groups run vertically, representing elements with similar chemical properties and the same number of electrons in their outer shell.
百度试题 结果1 题目There are ___ periods in the periodic table. A. 7 B. 8 C. 9 D. 10 相关知识点: 试题来源: 解析 A。目前元素周期表有 7 个周期。反馈 收藏
题目The horizontal rows in the periodic table are called___. A. groups B. periods C. families D. series 相关知识点: 试题来源: 解析 B。元素周期表中的水平行称为周期。选项 A 组是垂直列;选项 C 家族不准确;选项 D 系列也不是水平行的正确名称。反馈 收藏...
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What is the difference between a group and a period in the periodic table? A group is a vertical column on the periodic table and a period is a horizontal row on the periodic table. Are families groups or periods? Groups are also known as families. The two terms are used interchangeably...
To determine how many groups and periods are present in the modern periodic table, we can follow these steps: Step 1: Understand the Definitions- Periods: These are the horizontal rows in the periodic table.- Groups: These are the vertical columns in the periodic table. Step 2: Count the ...
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 its properties.Updated: 11/21/2023 Describe The Periodic Table ThePeriodic Table of Elementsis a widely used tool in chemistry. The Periodic Table ...
Modern Periodic Table Mrs. Coyle Part I Introduction. Periods and groups. Metals, nonmetals and metalloids.CHONMg
The Periodic Table was developed in 1869 and it revolutionised science. It's organised into groups and periods, and an element's position can tell us a great deal . To revise what you learned in Year 10 and year 11, have a go at this GCSE chemistry quiz
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