在化学元素的瑰宝中，卤素(Halogen)家族独树一帜，由五位成员组成：活泼的氟( Fluorine )、活泼的氯( Chlorine )、神秘的溴( Bromine )、珍贵的碘( Iodine )，以及极其罕见的砹(Astatine)。这些元素位于第七主族，以其独特的化学性质，轻松与其它元素形成化合物，创造出无数神奇的化学反应。卤素化合...
Chlorine is the 20th most abundant element in crustal rocks where it occurs to the extent of 126 ppm. The chapter also discusses the production and uses of fluorine, chlorine, bromine, iodine, and astatine. The only practicable large-scale method of preparing fluorine gas is Moissan's original...
性质:周期表中ⅦA族元素,包括氟、氯、溴、碘、砹,其中砹是人工放射性元素。由于它们都能直接与金属化合形成盐类,并在自然界都以典型盐类形式存在,故得名。含义是成盐元素。卤素原子最外电子层都有7个电子,价电子层结构为ns2np5,容易接受1个电子而很难失去电子;都是活泼非金属,非金属性比同周期的氧族元素强,...
卤族halogen元素:指周期系第7主族(ⅶa)非金属元素,包括了氟(fluorine)、氯(chlorine)、溴(bromine)、碘(iodine)和砹(astatine)等五种元素,总称为卤素。卤族元素作为一类典型的、较活泼的非金属元素,在自然界中多以卤素化合物存在,其特性是:较外电子层都有7个电子,都易于得到一个电子形成稳定的卤素化合物。 卤...
ChemInform Abstract: Fluorine, Chlorine, Bromine, Iodine and Noble Gasesinorganic chemistry, reviewinert gaseshalogensChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article ...
解析 你所提到的cas号分别是Fluorine(氟) : 7782-41-4Chlorine(氯): 7782-50-5Bromine(溴): 7726-95-6Iodine(碘): 7553-56-2 如果还有需要查询其它物质的cas no 可以使用在线cas no查询工具:anychem —... 分析总结。 7553562如果还有需要查询其它物质的casno可以使用在线casno查询工具...
Why do the elements chlorine and iodine have similar chemical properties? They are both halogens andhave the same number of electrons on their outer shell. What element has properties like chlorine? What are two elements that have properties similar to those of chlorine?Fluorine and brominehave ...
These include chlorine, bromine, iodine, and astatine. Fluorine is the most active chemical element, reacting with virtually every element. It even reacts with the noble gases at high temperatures and pressures. The noble gases, or Group 18 (VIIIA), also known as the inert gases, generally...
halogen- any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc. ...
THE heat of dissociation of chlorine, bromine, and iodine has been determined by thermal methods by Bodenstein and estimated respectively to be + 56.8, + 45.2, + 35.6 kilo-cal. No data are yet known regarding the heat of dissociation of fluorine.. 1931 Nature Publishing Group...