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 ...
结果1 题目 1 The properties of elements and their compounds show similarities, differences and trends depending on the positions of the elements.(a) The elements in the third period, and their compounds, show trends in their physical and chemical properties. A sketch graph of the first ...
All pupils will be able to (Baseline): Describe how properties of the elements in Group 1 depend on the outer shell of electrons of the atoms. Most pupils will be able to (Further): Explain how properties of the elements in Group 1 depend on the outer shell of electrons of the atoms....
Group2 ReactionsoftheGroup2elements 1.withWATERtoproduceHYDROXIDES.2.withOXYGENtoformOXIDES2Ca(s)+O2(g)→2CaO(s)3.withCHLORINEtoformCHLORIDES Mg+H2O Ca+H2O Group2 ReactionsoftheGroup2elements topreventtheeacapeoffammablegasintothelab.Group2 PropertiesofthecompoundsofGroup2metals ...
If r 1 , r 2 are an elements of F /[ N , N ] and, for some positive integer d , r 1 d is in the normal closure of r 2 d in F /[ N , N ], then r 1 is in the normal closure of r 2 in F /[ N , N ]. Let F / N be a soluble group; r an element of F...
5(a)(i)melting point of lithium: values between 110 C and 210 C (inclusive)(1)atomic radius of potassium: values between 190 pm and 240 pm (inclusive)(1)5(a)(ii)decreases (down the group)5(a)(ii)there is no trend in thermal conductivity (of the other elements down the group)5...
number of protons C. number of neutrons D. number of valence E. lectrons 相关知识点: 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...
Step by step video & image solution for Which of the following properties of the elements of group II (alkali earth metals) increase (s) with increasing atomic number? by Chemistry experts to help you in doubts & scoring excellent marks in Class 12 exams.Updated on:21/07/2023Class...
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。
结果1 题目3The elements in Group 2 from Mg to B a can be used to show the trends in properties down a group in the Periodic Table.3(a)State the trend in atomic radius for atoms of the elements down Group 2 from Mg to Ba Give a reason for this trend.[2 marks]、Trend Reason3(...