Answer:
jar 1 = barium chloride
jar 2 = potassium bromide
jar 3 = calcium iodide
Step-by-step explanation:
Electronegativity (EN): A measure of an atom's ability to attract electrons (or electron density) toward itself. On the Pauling scale, fluorine is the most electronegative element (EN = 4.0) and cesium and francium are the least electronegative elements (EN = 0.7).