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Q. If the electronic configuration of an element is 2, 8, 2, to which period of the Modern Periodic Table does it belong ?

  • (A) 4
  • (B) 2
  • (C) 12
  • (D) 3
  • Correct Answer - Option(D)
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Explanation by: Admin
Element with electronic configuration 2,8,2 belongs to 3rd period and 2nd group. The valence electrons give us the idea of group number. As the electrons are divided into 3 different shell therefore period number is 3

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