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If an element belongs to 3rd period and 17th group, then answer the following questions. 1) What is its electronic configuration? 2) How many valence electrons are there in the element? 3) What is the valency of element? 4) What is atomic number of element? 5) What is the name of the element? 6) Give two more elements which have similar properties as this element? |
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Answer» 1) The element belongs to 3rd period and 17th group. So the valence orbit is 3rd and number of valence electrons in that orbit is 7. So its electron configuration is 2, 8, 7. 2) The number of valence electrons are 7. 3) The valency of element = 8 – 7 = 1. 4) The atomic number of element is 17. 5) Name of the element is chlorine. 6) Chlorine belongs to Halogen family. So Fluorine, Bromine, Iodine, and Astatine have similar properties as chlorine. |
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