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Which Element Has 7 Valence Electrons?

Which Element Has 7 Valence Electrons?, Valence Electrons and the Periodic Table, 15.84 MB, 11:32, 404,204, The Organic Chemistry Tutor, 2017-09-27T02:00:01.000000Z, 19, Chem – Valence Electrons | Scientific Tutor, scientifictutor.org, 1314 x 1050, jpeg, , 8, which-element-has-7-valence-electrons, TeacherDesk