What is the atomic number of element of period 3 and group 17 of the Periodic Table? The most active element in group 17 is fluorine 13. 14. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts). So, now you know what halogens are! 2Na(s) + F2(g) -----> 2NaF(s) 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 Explanation: The elements in-group 7 are often referred as “halogens”. ; Group 17 elements can combine with nearly all the elements in the periodic table. For example, flourine reacts explosively with sodium to form sodium fluoride. The group 17 elements include fluorine(F), chlorine(Cl), bromine(Br), iodine(I) and astatine(At) from the top to the bottom. The majority of the elements … Question: 47) Group 17 (7A) Elements Are Also Called: A) Noble Gases. The elements of group 17 are called Halogens. b. atomic mass. 15. They are called “halogens” because they give salts when they react with metals. The elements in group 17 of the periodic table are all called halogens. Halogen, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. 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 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) 0.125 B) 4 C) 8 D) 16 49) What Is The Oxygen-to-sulfur Mass Ratio Of Sulfur Dioxide? All halogens have the same a. atomic number. Elements in group VIIA (sometimes referred to as group 17) are all called _____. Group 17 Elements. Group 17 elements are called. D) Alkali Metals. Image showing periodicity of group numbers for group 17 chemical elements. Learn more about the properties of halogens in this article. None. c. number of possible isotopes. Elements in a group have the same number of energy levels and the same valence electrons. Notes. 48) What Is The Oxygen-to-hydrogen Mass Ratio For H2O2? C) Alkaline Earth Metals. Why this name? Group 18 are called the noble gases . B) Halogens. When they form ions, they tend to gain an electron and form negative ions. lynelle lynelle 01/21/2020 Physics Middle School Elements in group VIIA (sometimes referred to as group 17) are all called _____. Get the answers you need, now! New questions in Science. 2 See answers aladeemmanuel562 aladeemmanuel562 The halogens are located on the left of the noble gases on the periodic table. 1- The elements in this group are all non metals. Let’s now look at the electronic configuration of these elements. 2- The term 'halogen' is a Greek word which means 'salt former' because they react with metals to form compounds called salts. There is considerable confusion surrounding the Group labels. Units. halogens 12. (a) 10 (b) 4 (c) 17 (d) 21 (c) 17. Although astatine is radioactive and only has short-lived isotopes, it behaves similar to iodine and is often included in the halogen group. 13. 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. The elements of group 16 are called (a) Chalcogens (b) Halogens (c) Pnicogens (d) Noble gases (a) Chalcogens. Valence electrons term 'halogen ' is a Greek word which means 'salt former ' because they react with to... They react with metals nearly all the elements … the halogens are on! 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