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(a) What is the number of valence electrons in the atoms of first element in a period? (b) What is the usual number of valence electrons in the atoms of the last element in a period?

ChemistryClass 10ICSEAnswered 27 Mar 2026
Answer
  • 1 valence electron will be there in the atom of first element in a period
  • 8 valence electron will be there in the atom of last element in the

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