百度试题 结果1 题目What is a row of elements on the periodic table called? A. octave B. period C. group D. transition 相关知识点: 试题来源: 解析 B 反馈 收藏
Discover bismuth on the Periodic Table. Explore what bismuth is, its radioactivity and other properties, and its many uses in medical and other...
Hydrogen is the first element on the periodic table. It is a very light gas with unique properties. Hydrogen has a low density and is colorless, odorless, and tasteless. It is highly flammable and can react explosively with oxygen. Hydrogen has many important uses. It is used as a fuel ...
A. colors of the elements. B. sizes of the elements. C. atomic weights and chemical properties. D. melting points of the E. lements. 相关知识点: 试题来源: 解析 C。原因:文中提到“Mendeleev arranged the elements according to their atomic weights and chemical properties.”。 反馈...
Periodicityis one of the most fundamental aspects of theperiodic tableof the elements. Here is an explanation of what periodicity is and a look at the periodic properties. What Is Periodicity? Periodicity refers to the recurring trends that are seen in the element properties. These trends became ...
A. the color of elements. B. the size of elements. C. the atomic number of elements. D. the reactivity of E. lements. 相关知识点: 试题来源: 解析 C。元素周期表是按照元素的原子序数排列的。选项 A 颜色不是排列依据;选项 B 大小不是主要依据;选项 D 反应性不是排列的基础。反馈...
C. His periodic table was the first table in the world. D. He arranged the first periodic table accepted widely.( )3. How many scientists are mentioned in the passage? A. Two. B. Three. C. Four. D. Five.()4. What does the last paragraph mainly talk about? A. A periodic table...
single column of the periodic table, although the transition elements consist of several columns, plus the elements located below the main body of the table. An example of an element family is the nitrogen group or pnictogens. Note that this element family includes nonmetals, semimetals, and ...
An International Conference on the Periodic Table.(CIC Bulletin ICC)RaynerCanham, Geoff
百度试题 结果1 题目What is the second element on the periodic table of elements? A.HydrogenB.Helium 相关知识点: 试题来源: 解析 B 反馈 收藏