Group 17 of the periodic table of the elements (see Table 1.1) consists of the so called halogen elements fluorine, chlorine, bromine, iodine, astatine and the recently discovered element 117 (Organessian et al. in Phys Rev Lett 104:142502, 2010), although it is not yet known if this ...
From Longman Dictionary of Contemporary Englishhal‧o‧gen/ˈhælədʒən/noun1[uncountable]ahalogenlightuses halogengastoproducelighthalogen bulb/lamp/light etc2[countable, uncountable]one of agroupof fivesimplechemicalsubstancesthat makecompoundseasilyExamples from the Corpushalogen•In exa...
(a) Write and explain the trend in volatility of chlorine, bromine and iodine down the group. 相关知识点: 试题来源: 解析 (a) 在卤素族中,从氯到碘,元素的挥发性逐渐降低。这是因为随着原子序数的增加,原子半径也随之增加,原子核对最外层电子的吸引力减弱,使得电子更容易被其他原子吸引,从而形成化学键...
Also found in: Thesaurus, Medical, Encyclopedia. hal·o·gen (hăl′ə-jən) n. Any of a group of five chemically related nonmetallic elements including fluorine, chlorine, bromine, iodine, and astatine. adj. 1. Of or relating to the group of elements that are halogens. 2. Of ...
Elements: HalogenHalogen elements include fluorine (F), chlorine (Cl), bromine (Br), iodine (I) and astatine (At). Astatine is rare in nature, while the other halogens are associated with common mineral groups and...doi:10.1007/1-4020-4496-8_99Ronald S. Kaufmann...
The halogens make up Group VIIA of the Periodic Table of the elements. Elemental halogens are diatomic molecules. However, due to their high reactivity, the halogens are never found in nature in native form. The family name means "salt-forming," from the Greek for salt, halos, and for ...
aUnlike halogens, the reactivities of alkali metals increase down the group; that is, elements in the higher numbered periods are more reactive than elements in the lower numbered periods. 不同于卤素,碱金属反应性增加在小组下; 即元素在更高的被编号的期间比元素易反应在更低的被编号的期间。 [...
What are the elements in Group {eq}1A {/eq} on the periodic table called? (a) alkali metals (b) alkaline earth metals (c) halogens (d) inner transition metals. The periodic table: The periodic table: The periodic table host ...
The elements of group VIIA are all nonmetals and are known as the halogens,from the Greek term meaning “salt formers.”They are the most reactive nonmetals and are capable of reacting with practically all the metals and with most nonmetals,including each other. 除了 Po 之外,VIA 元素都是...
Use the Periodic Table shown to identify the properties of the Chlorine, symbol Cl. Periodic Table of Elements Step 1: Group Number of Chlorine = Group 17 Group {eq}17 {/eq} is on the second from the right side of the periodic table. In this group, elements are known as Haloge...