Chemistry, 03.07.2019 00:30, settasav9641
Fluorine has an atomic number 9. it is in period 2 of the periodic table. the diagram shows the electron dot diagram of a fluorine atom. how many valence electrons are in an atom of fluorine? two seven nine seventeen
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Chemistry, 22.06.2019 07:00, daniellekennedy05
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Fluorine has an atomic number 9. it is in period 2 of the periodic table. the diagram shows the elec...
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