The elements in the same group have similar ___. A. atomic numbers B. period numbers C. properties D. masses 相关知识点: 试题来源: 解析 C。同一族的元素具有相似的性质(properties)。选项 A“atomic numbers”是原子序数;选项 B“period numbers”是周期数;选项 D“masses”是质量。反馈...
A. atomic numbers B. chemical properties C. atomic radii D. ionization E. nergies 相关知识点: 试题来源: 解析 B。解析:文中提到“Elements in the same group have similar chemical properties. This is because they have the same number of valence electrons.”。 反馈 收藏 ...
A. different B. similar C. same D. opposite 相关知识点: 试题来源: 解析 B。“Elements in the same group have similar chemical properties.”可知同一组的元素有相似的化学性质。A 选项不同的、C 选项相同的、D 选项相反的均不符合语境。反馈 收藏 ...
试题来源: 解析 D。解析:文章中明确提到“The elements in the same group have similar chemical properties. This is because they have the same number of valence electrons.”,即同一族的元素具有相似的化学性质是因为它们有相同数量的价电子。反馈 收藏 ...
Elements in the same group often have similar chemical properties ___ they have the same number of valence electrons. A. because B. so C. but D. or 相关知识点: 试题来源: 解析 A。因为同一组的元素具有相似的化学性质是因为它们有相同数量的价电子,所以用 because。
there is a recurring pattern called the “periodic law” in their properties, in which elements in the same column (group) have similar properties. The initial discovery, which was made byDmitry I. Mendeleevin the mid-19th century, has been of inestimable value in the development ofchemistry....
in a way similar to parents and children, except that they do not have to contain or be contained directly. Theelement is the parent of theelement, and the ancestor of every element in the document. The<d>,<e>, and<f>elements are descendants of the,, and<c>elements. See Also...
However, you can also get to all these things from within the Editor or the Organizer, so there’s no need to keep the Welcome screen around just for that. The box below explains how to get rid of the Welcome Screen. FREQUENTLY ASKED QUESTION: Say Goodbye to the Welcome Screen How do...
it is the systematic study of methods that are, can be, or have been applied within a discipline. it is the study or description of methods. (wikipedia)unit fouri. warm-up4. what types of data are normally collected for research?u 8、nit fouri. warm-up5. any difference between ...
The common template for items within the grid tells the user that the items are similar to each other. Together, these techniques establish a powerful visual hierarchy that should match the semantics of your content. Grids look neat, ordered, and calming. That may suit the style of your site...