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
___ elements in ___ Group 1 are called alkali metals. A、/; the B、The; a C、The; the D、The; /
2 The elements in Group 17 of the Periodic Table are called the halogens. They form stable compounds with both metals and non-metals.The table gives some dat a about F2, HCl and CaF2F2HCI CaF2boiling point/K851882773relative formul a mass38.036.578.1(a)(i) State what is meant by the...
2 The elements in Group 17 of the Periodic Table are called the halogens. They form stable compounds with both metals and non-metals.The table gives some dat a about F2, HCl and CaF2.HCL CaF2boiling point/K851882773relative formul a mass38.036.578.1(a)(i) State what is meant by the ...
百度试题 结果1 题目The rows in the periodic table are called ___. A. groups B. periods C. elements D. properties 相关知识点: 试题来源: 解析 B。解析:文章中明确提到“The rows are called periods.”。 反馈 收藏
1 :any of the four substances air, water, fire, and earth formerly believed to compose the physical universe 2 :a constituent part: as a :any of more than 100 fundamental substances that consist of atoms of only one kind and that singly or in combination constitute all matter ...
On the periodic table, what are elements from the 7A(17) group called?What is the name of an element in one of the 14 groups shown separately at the bottom of the periodic table?State the Group 7 elements of the periodic table.
The energy released in the formation of anionfrom a free atom and an electron (brought up from aninfinitedistance) is called theelectron affinity. The electronaffinitiesfor the halogen atoms all are high and show only slight differences from one another. It is known, however, that the oxidizing...
The periodicity in properties of the elements arranged in order ofatomic numberis strikingly shown by the consideration of the physical state of the elementary substances and such related properties as themelting point, density, and hardness. The elements of Group 18 (0) are gases that are diffic...
MISP galaxy is a simple method to express a large object called cluster that can be attached to MISP events or attributes. A cluster can be composed of one or more elements. Elements are expressed as key-values. There are default knowledge base (such as Threat Actors, Tools, Ransomware, AT...