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What is the usual number of valence electrons and valency of group 18 elements of the periodic table? (a) What happens to the number of valence electrons in the atoms of elements as we go down in a group of the periodic table?

ChemistryClass 10ICSEAnswered 27 Mar 2026
Answer
  • Usual number of valence electrons is 8 of group 18 in periodic table; Valency is
  • The number of valence electrons remains the same in the atom of elements as we go down in a group of the periodic table.

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