Witrynaalkaline-earth metal, any of the six chemical elements that comprise Group 2 (IIa) of the periodic table. The elements are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). Prior to the 19th century, substances that were nonmetallic, insoluble in water, and unchanged by fire were known as earths. … Witrynahalogen, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts). They were given the name halogen, from the … The great reactivity of fluorine largely stems from the relatively low dissociation … Take these quizzes at Encyclopedia Britannica to test your knowledge on a … organohalogen compound, any of a class of organic compounds that contain at least … periodic table, in full periodic table of the elements, in chemistry, the organized … noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) … Other articles where oxidation is discussed: alcohol: Oxidation: Alcohols may be … fluorine (F), most reactive chemical element and the lightest member of the halogen … caries, also called tooth decay, cavity or decay of a tooth, a localized disease …
Groups and periods - The periodic table - BBC Bitesize
Witryna23 mar 2024 · There are total 18 different groups in Periodic table. Group 1: Alkali metals group (hydrogen not included) Group 2: Alkaline earth metals group. Group … Witryna15 sie 2024 · The noble gases (Group 18) are located in the far right of the periodic table and were previously referred to as the "inert gases" due to the fact that their … mayroad housing eielson
Physical Properties of Group 17 Elements of Periodic Table
Witryna21 sie 2024 · Halogen Group (Group 17) Trends. The halogens are located on the left of the noble gases on the periodic table. These five toxic, non-metallic elements make … WitrynaThe elements in this group are all non-metals. The term 'halogen' is a Greek word which means 'salt former' because they react with metals to form compounds called salts. For example, fluorine reacts explosively with sodium to form sodium fluoride. Hence group 17 are called halogens. WitrynaThe group 17 elements of the periodic table are made up of five chemically similar elements: Fluorine; Chlorine; Bromine; Iodine; Astatine; The term halogen has been derived from the Greek … mayroad housing