1) Groups in the periodic table tell us a) The number of electrons in the outer shell b) The number of electron shells c) The number of elements in the group 2) Fluorine forms a) 2+ ions b) 1+ ions c) 2- ions d) 1- ions 3) Ionic compounds are a) Positively charged b) Negatively charged c) Neutral 4) An ionic bond is a) electrostatic forces b) shared electrons c) magnetic forces 5) Solid ionic compounds conduct electricity a) True b) False

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?