. How many valence electrons does each of the following atoms have: gallium, fluorine and Selenium?
Got a Periodic Table?
Of course you have, you are doing your chemistry homework. Gallium, Group 13, has 3 valence electrons... Fluorine, Group 17, has 7 valence electrons... Selenium, Group 16, has 6 valence electrons. Gallium, a metal tends to form positive ions of what charge? Fluorine, and selenium, tend to be oxidizing and form ions of what charge?