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 ...
The properties of elements in the same group of the periodic system are, although similar, not identical. The trend in properties from the lighter to the heavier elements may be attributed to changes in the strength of binding of the outer electrons and especially to the increasing size of the...
What do the alkali metals all have in common? a. They all have similar physical properties. b. They all undergo similar reactions. c. They all form +1 ions. d. They all have the same number of valence electrons. e. All of the above ...
Why do elements from each family have similar properties even though their periodic trends are different? Which of the following compounds have the same physical properties? Briefly describe, why do elements in a given group have similar chemical properties? What are the physical properties ...
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。
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What are the periodic trends on the table? Each of the elements in the same period of the periodic table: A. has the same number of protons and electrons. B. belong to the same family. C. has the same number of electrons in each orbital. D. has the same number of ...