Problem#8: (a) Explain why hydrogen fluoride (HF) has a higher boiling temperature than hydrogen chloride (HCI) (19.4 vs. -85C), even though HF has a lower molecular weight. (3 points) (b) Potassium iodide (KI) exhibits predominantly ionic bonding. The K and I ions have electron structures that are identical to which two inert gases? (3 points) (c) Relative to electrons and electron states, what does each of the four quantum numbers specify? (2 points) (d) What type(s) of bonding would be expected for each of the following materials: solid Xenon, calcium fluoride (CaF2), bronze, cadmium telluride (CdTe), rubber, and tungsten? 4 points)