WebAnswer (1 of 3): The halogens are located on the left of the noble gases on the periodic table. These five toxic, non metallic elements make up Group 17 of the periodic table and consist of: fluorine (F), chlorine (CI), bromine (Br), iodine (I), and astatine (At). Although astatine is radioactiv... WebAug 15, 2024 · Chemistry of Chlorine (Z=17) Chlorine is a halogen in group 17 and period 3. It is very reactive and is widely used for many purposes, such as as a disinfectant. Due to its high reactivity, it is commonly found in nature bonded to many different elements. Chlorine, which is similar to fluorine but not as reactive, was prepared by Sheele in the ...
physical properties - Groups in the periodic table - BBC Bitesize
WebHow many valence electrons do all halogens have? 7 Element A is located between group 16 and noble gas on the periodic table. A is a (n) halogen Which other elements of the … WebMar 29, 2024 · In 1864, J.A.R. Newlands proposed classifying the elements in the order of increasing atomic weights, the elements being assigned ordinal numbers from unity upward and divided into seven groups having … thumb issues from texting
2.7: The Periodic Table - Chemistry LibreTexts
WebThe s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups. The elements in each group have the same number of valence … WebJan 25, 2013 · Best Answer. Copy. Halogens are group 17 elements. They have 7 valence electrons. Wiki User. ∙ 2013-01-25 07:34:23. This answer is: WebSep 14, 2024 · The halogens are fluorine, chlorine, bromine, iodine, and astatine. The name halogen is derived from the Greek words for “salt forming,” which reflects that all the halogens react readily with metals to form compounds, such as sodium chloride and calcium chloride (used in some areas as road salt). thumb it in