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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Paragraph 1: The periodic table is a chart that reflects the periodic recurrence of chemical and physical properties of the elements when the elements are arranged in order of increasing atomic number (the number of protons in the nucleus). It is a monumental scientific achievement, and its deve...
PERIOD 1 1 IA 1.008 18 2 Group IUPAC 2 4 IIA 9.01 1 1 Group CAS IA 1.008 VIIIA 4 1 H Hydrogen 3 6.94 Atomic Number Atomic Mass Atomic Symbol 2 Li 11 Lithium 22.99 Be Beryllium 12 24.31 H Hydrogen Atomic Name Metal Alkaline Metal Alkaline Earth Metal Transition Metal Lanthanide ...
百度试题 结果1 题目Non-metals are on ___ right side of the periodic table. A. the B. a C. an D. / 相关知识点: 试题来源: 解析 A。“on the right side”表示“在右边”,这里需要用定冠词 the。反馈 收藏
The elements of the periodic table are put in order of: a. Electrons b. Atomic mass c. Atomic number d. Neutrons The Periodic Table: The periodic table is the place when we find the elements: They are arranged in a particular way. ...
What are the elements in Group {eq}1A {/eq} on the periodic table called? (a) alkali metals (b) alkaline earth metals (c) halogens (d) inner transition metals.The periodic table:The periodic table:The periodic table host...
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