How do we know where to put astatine in the periodic table if most of its properties are unknown?

Which of the following is a compound? a.carbon b.oxygen c.hydrogen d.water

Easy definition for atom and atomic mass

Which statements are true about electrolysis? check all that apply. electrolysis requires an acid be present. electrolysis is described by two half-reactions. electrolysis is not an industrial process. electrolysis results in commercially valuable products. electrolysis involves the transfer of electrons. reduction results in the loss of electrons. oxidation results in the loss of electrons.