Lithium, aluminum, magnesium, or chlorine?
Lithium, Aluminum and Magnesium are metals and lose electrons and become positive ions because they are trying to obtain a stable electron configurations like the noble gases Helium(Lithium) and Neon (Magnesium and Aluminum)Chlorine gains an electron because it is trying to become stable like the noble gas Argonso chlorine is the only one that will form a negative ion.
