Potassium has one electron in its outer shell. Which of the following is most likely? 1. It will become positively charged 2. It will become negatively charged 3. It will form a covalent bond 4. None of these is likely to happen, it’s stable as is Solution presence of one valence electron in the valence shell the potassium is monovalent and have positive charge. sodium and potassium metals in general donot form covalent bonds..