An element has atomic number 17 to which group and period closer it belong.
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2,8,7 is the electronic configuration of the element whose atomic number is 17. As it has 7 valence electrons. So Its belongs to 17th group and 3rd period.
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Explanation:
2,8,7 is the electronic configuration of the element whose atomic number is 17. As it has 7 valence electrons. So Its belongs to 17th group and 3rd period.
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