百度试题 结果1 题目The horizontal rows in the periodic table are called ___. A. groups B. periods C. lines D. rows 相关知识点: 试题来源: 解析 B。周期表中的水平行被称为周期。A 选项族、C 选项线、D 选项行表述不准确。反馈 收藏 ...
al The horizontal rows of the table are called periods. The elements of a period are characterized by the fact that they have the same number of electron shells; the number of electrons in these shells, which equals the element's atomic number, increases from left to right within each perio...
The periodic table is a system for arranging materials. It's worth noting that they're organized into columns and rows. 'Periods' are the horizontal rows that run from left to right, while 'groups' are the vertical columns (going from up to down). Different groups are present in the per...
The rows of the periodic table are calledperiods, and the columns are known asgroups. Groups have similar physical and chemical properties. Thegroupan element belongs to corresponds to the number of electrons in its outer shell. Group 1 elements have 1 outer shell electron, group 2 has two o...
The modern periodic table is an arrangement of elements based on their atomic number and electronic structure. The most commonly used form of the modern periodic table, sometimes called the long form, in which the elements are arranged ...
Periods are the rows of the periodic table, groups are the columns. Every element has a unique combination of period and group, and a unique atomic number.Explanations (5) Lydia Kim Text 4 Reading the Periodic Table The periodic table is a chart with all the known elements. We've all ...
A. Groups B. Periods C. Elements D. Properties 相关知识点: 试题来源: 解析 B。原因:文章中明确提到“The horizontal rows or periods show how the properties of elements change as you move across.”,即水平行被称为 periods。反馈 收藏
A. groups B. periods C. elements D. compounds 相关知识点: 试题来源: 解析 B。本题考查元素周期表的基本结构知识。元素周期表的水平行称为周期(periods)。选项 A“groups”是指族;选项 C“elements”是元素;选项 D“compounds”是化合物。反馈 收藏 ...
3.TheModernPeriodicTable（现代元素周期表）GlennSeaborg（格伦·西奥多·西博格）discoveredthetransuraniumelements,atomicnumbers94to102.Dr.Seaborgandhiscolleaguesarealsoresponsiblefortheidentificationofmorethan100isotopesofelements.PeriodsandGroups(周期和族)Elementsintheperiodictablearrangedinperiods(rows)andgroups(columns...
Periodic Table:In a periodic table, the horizontal rows are named as periods and the vertical columns are named as groups. These rows and columns have made the study of different existing elements very easy.Answer and Explanation: In the arrangement of elements existing in the periodic table, ...