So, now you know what halogens are! Group 18 are called the noble gases . The elements in group 17 of the periodic table are all called halogens. 13. ; Group 17 elements can combine with nearly all the elements in the periodic table. 14. The elements of group 16 are called (a) Chalcogens (b) Halogens (c) Pnicogens (d) Noble gases (a) Chalcogens. The group 17 elements include fluorine(F), chlorine(Cl), bromine(Br), iodine(I) and astatine(At) from the top to the bottom. C) Alkaline Earth Metals. Halogen, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. D) Alkali Metals. They are called “halogens” because they give salts when they react with metals. Image showing periodicity of group numbers for group 17 chemical elements. Group 17: halogens; Group 18: noble gases; In addition, groups may be idenitifed by the first element in each group - so the Group 16 set of elements is sometimes called the oxygen group. All halogens have the same a. atomic number. New questions in Science. For example, flourine reacts explosively with sodium to form sodium fluoride. b. atomic mass. Learn more about the properties of halogens in this article. 48) What Is The Oxygen-to-hydrogen Mass Ratio For H2O2? 1- The elements in this group are all non metals. Although astatine is radioactive and only has short-lived isotopes, it behaves similar to iodine and is often included in the halogen group. Question: 47) Group 17 (7A) Elements Are Also Called: A) Noble Gases. lynelle lynelle 01/21/2020 Physics Middle School Elements in group VIIA (sometimes referred to as group 17) are all called _____. These five toxic, non-metallic elements make up Group 17 of the periodic table and consist of: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). Units. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts). Elements in a group have the same number of energy levels and the same valence electrons. The halogens are located on the left of the noble gases on the periodic table. Notes. halogens 12. 15. When they form ions, they tend to gain an electron and form negative ions. Why this name? B) Halogens. The majority of the elements … 2Na(s) + F2(g) -----> 2NaF(s) 2 See answers aladeemmanuel562 aladeemmanuel562 Explanation: The elements in-group 7 are often referred as “halogens”. There is considerable confusion surrounding the Group labels. Group 17 elements are also known as: (a) halogens (2) (name still in common use) (b) Group VIIA (name no longer used) Group 17 elements are non-metals; Group 17 elements exist as diatomic molecules (X 2) when not combined with other elements. (a) 10 (b) 4 (c) 17 (d) 21 (c) 17. 2- The term 'halogen' is a Greek word which means 'salt former' because they react with metals to form compounds called salts. Group 17 Elements. 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