johndheming7580 johndheming7580
  • 24-08-2017
  • Chemistry
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Compare the number of valence electrons in an atom of oxygen, o, with the number of valence electrons in an atom of selenium, se. are oxygen and selenium in the same period or group?

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ajd995 ajd995
  • 24-08-2017
Oxygen and selenium both have 6 valence electrons. They're in the same group hope this helps
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