Achlorine atom reacts with a sodium atom to form sodium chloride, nacl. a chlorine atom can also react with another chlorine atom to form a chlorine molecule, . which statement best explains the behavior of chlorine in these two reactions? a) a chlorine atom can form a covalent bond with another atom by sharing electrons. b) a chlorine atom can form an ionic bond with another atom by accepting an electron. c) a chlorine atom can form ionic bonds by accepting an electron and covalent bonds by sharing electrons. d) a chlorine atom can form ionic bonds by sharing electrons and covalent bonds by accepting an electron.