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 ...
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 ...
B. They have similar physical properties. C. They have similar chemical properties. D. They have no relation. 相关知识点: 试题来源: 解析 C。中文解析:“Elements in the same group have similar chemical properties.”,同一族的元素具有相似的化学性质。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。
1 (a) Elements in the same group tend to form products with similar physical properties.However, the oxides of carbon and silicon have very different physical structures. While CO2 exists as a gas at room temperature, SiO2 is a solid.(i) Explain, in terms of structure and bonding, the di...
2 Elements in the same group of the Periodic Table often show trends in physical properties and similarities in chemical properties.(a)Name a group in the Periodic Table and briefly describe a trend in a physical property shown on moving down this group.name of group I (the alkali metals)tr...
百度试题 结果1 题目___ elements in ___ Group 1 are called alkali metals. A. /; the B. The; a C. The; the D. The; / 相关知识点: 试题来源: 解析 D 反馈 收藏
21 Elements X and Y are in the same Group of the Periodic Table.Which statement must be correct? A A Atoms X and Y have similar electronic structure. B Atoms X and Y have the same physical properties. C If X has a smaller proton number than Y, it is less metallic. D The number ...
___ elements in ___ Group 1 are called alkali metals. A、/; the B、The; a C、The; the D、The; /