When potassium reacts with chlorine, the ionic compound potassium chloride is formed. What are the charges of the potassium and chlorine ions?
a) Potassium: +2, Chlorine: -2
b) Potassium: +1, Chlorine: -1
c) Potassium: +2, Chlorine: -1
d) Potassium: +1, Chlorine: -2
