Discuss the role of halogens in treating water supplies. What are the biological effects of halogen deficiency or excess in living organisms

There are five halogens in the periodic table of chemical elements: fluorine, chlorine, bromine, iodine, and astatine. The halogens are all highly reactive ... Halogens on the Right ... In the second column from the right side of the periodic table, you will find Group Seventeen (Group XVII). This column is the home of ... This group contains fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). Halogens have seven valence electrons and usually form anions with ... Periodic Table of the Elements, Halogens - Map Quiz Game. Upgrade your account to access this feature. Create challenge. Halogens are highly reactive nonmetallic elements in group 17 of the periodic table. As you can see in the periodic table below, the halogens include the ... Jan 6, 2014 ... This graphic looks at the halogens, found in Group 7 of the Periodic Table. This group consists of the elements fluorine, chlorine, bromine, iodine and ... The Basic Properties of Halogens. Halogens, which fall under Group 7 of the periodic table, are known for their vibrant colors. For instance, fluorine ( F_2 ) ... Name: Fluorine Symbol: F Atomic Weight: 18.998403 Atomic Number: 9 Element Classification: Halogens Discovered By: Henri Moissan Discovery Date: 1886 (France) The halogens are located in Group 17 (VIIA) of the periodic table and belongs to a class of nonmetals. The halogen elements are fluorine, chlorine, bromine, ... Alkali metals and halogens belongs to group 1A of the periodic table and group 17 respectively. Read more for further details.