Describe the industrial applications of halogens. What are the environmental concerns related to certain halogen-containing compounds

Other groups with specific names are the pnictogens (group 15), chalcogens (group 16), halogens (group 17), and the noble gases (group 18, also known as inert ... Elements that share similar chemical properties are arranged in vertical columns, called groups or families, in the modern periodic table. For example, the ... Why are they so reactive? Halogens are so reactive, because they have 7 valence electrons, and are very close to having a complete shell of 8 electrons. The ... Page 1. 1. H. Hydrogen. 1.008. 11. Na. Sodium. 22.989. 19. K. Potassium. 39.098. 37. Rb. Rubidium. 85.468. 55. Cs. Cesium. 132.905. 87. Fr. Francium. State the periodic law and explain the organization of elements in the periodic table ... halogens (group 17), and the noble gases (group 18, also known as inert ... Oct 10, 2020 ... The halogen elements are fluorine, chlorine, bromine, iodine, astatine, and tennessine. These elements are group 17 on the periodic table. Understanding Chemistry. PERIODIC TABLE GROUP 7 (HALOGENS) MENU. Note: If you use the current IUPAC (international Union of Pure and Applied Chemistry) ... A family of nonmetallic, generally electronegative, elements that form group 17 (formerly group VIIa) of the periodic table. The halogens are five non-metallic elements found in group 17 of the periodic table. The term "halogen" means "salt-former" and compounds containing halogens ... Explain some trends when going down Group 7 of Halogens in the Periodic Table. Going down Group 7 in the period table, the mass number increases, so the ...