Periodic tableMadelung ruleThis article considers two important traditions concerning the chemical elements. The first is the meaning of the term "element" including the distinctions between element as basic substance, as simple substance and as combined simple substance. In addition to briefly tracing ...
A. All elements are solids. B. Elements in different periods have no similarities. C. The periodic table helps us understand the relationships between elements. D. The periodic table only shows the names of E. lements. 相关知识点: 试题...
百度试题 结果1 题目What are the horizontal rows in the periodic table called? A. Groups B. Blocks C. Periods D. Orbitals 相关知识点: 试题来源: 解析 C。原因:文章中明确提到“The horizontal rows are called periods.”。 反馈 收藏
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
Metals are on the left of the table, metalloids are in the middle, and nonmetals are on the right. Each square of the periodic table contains information about the element. Who invented the Periodic Table? The Periodic Table was invented byDmitri Mendeleevin 1869, who was the first scientist...
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
In his version, Mosely arranged the elements according to their commonly observed oxidation states. This produced a periodic table that was in excellent agreement with the observed chemical behaviors of the elements, although it now showed a small number of elements to be out of order by atomic ...
state). The number of elements in a period increases as one traverses down the periodic table because as the energy level of the atom increases, the number of energy sub-levels per energy level increases.Using the data in the table scientists, students, and others that are familiar with ...
What is the first element on the periodic table? What is silver on the periodic table? What is gold on the periodic table? What is Se on the periodic table? What is CA on the periodic table? What are the nonmetals in a periodic table?
百科挑战题1) What is the letter forprop in the periodic table of chemical elements(化学素周期)? A.Fe B.Zn C.Ha2) What is the best way to look up information on the interne? A. By using e-mail B. By using QQ B33) What is the material of pengl leag()? A.lime B. graphite(...