C) A 4.873 gram sample of a compound containing only carbon, oxygen, hydrogen and chlorine is found by combustion analysis to produce 7.33 grams of carbon dioxide and 0.667 grams of water. In a second experiment, a 2.023 gram sample of the compound decomposes with heating to evolve 0.546 grams of chlorine gas (CI). The subscript of oxygen in the empirical formula of the compound is the same as the total number of electrons in the last occupied orbital set of element X