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March 24, 2017

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compare the number of valence electrons an oxygen, O, atom has with the number of valence electrons a selenium, Se, atom has. are oxygen and selenium in the same period or group?

  • Science - ,

    They are in the same group of 16. oxygen has 6 valence electrons selenium has also has 6

  • Science - ,

    they are the same when you close your eyes

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