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The most active element in group 17 is fluorine 13. Explanation: The elements in-group 7 are often referred as “halogens”. D) Alkali Metals. 2 See answers aladeemmanuel562 aladeemmanuel562 Get the answers you need, now! Write a short note on biosphere write a short note on biosphere those students who wants oswaal sample paper ,educart sample paper ,Notes,in pdf format then message me I will send you pdf in free of cost None. B) Halogens. The elements of group 17 are called Halogens. What is the atomic number of element of period 3 and group 17 of the Periodic Table? (a) 10 (b) 4 (c) 17 (d) 21 (c) 17. 48) What Is The Oxygen-to-hydrogen Mass Ratio For H2O2? Learn more about the properties of halogens in this article. 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. 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). Group 17 Elements. 13. When they form ions, they tend to gain an electron and form negative ions. Group 18 are called the noble gases . 14. Why this name? Elements in a group have the same number of energy levels and the same valence electrons. Notes. So, now you know what halogens are! 2Na(s) + F2(g) -----> 2NaF(s) lynelle lynelle 01/21/2020 Physics Middle School Elements in group VIIA (sometimes referred to as group 17) are all called _____. 15. b. atomic mass. 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. halogens 12. The halogens are located on the left of the noble gases on the periodic table. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts). Group 17 elements are called. For example, flourine reacts explosively with sodium to form sodium fluoride. Question: 47) Group 17 (7A) Elements Are Also Called: A) Noble Gases. Units. All halogens have the same a. atomic number. Although astatine is radioactive and only has short-lived isotopes, it behaves similar to iodine and is often included in the halogen group. The group 17 elements include fluorine(F), chlorine(Cl), bromine(Br), iodine(I) and astatine(At) from the top to the bottom. New questions in Science. 1- The elements in this group are all non metals. There is considerable confusion surrounding the Group labels. The elements of group 16 are called (a) Chalcogens (b) Halogens (c) Pnicogens (d) Noble gases (a) Chalcogens. A) 0.125 B) 4 C) 8 D) 16 49) What Is The Oxygen-to-sulfur Mass Ratio Of Sulfur Dioxide? 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