How does the coordination of the atoms in galena compare to those in halite andhow do the structures of these two minerals compare?

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It is a problem set sheet, I just want solutions to help me in the future. This is specifically geochemistry, and about the wt % of minerals, ionic ratios, etc: Here are the questions below:In the galena model, the sulfur atoms are in yellow and the lead atoms are in grey.Sulfur in galena exists in the 2- oxidation state.(a) Calculate the radius ratio for the ions in galena and determine what the coordinationof Pb2 is in this mineral.(b) How does the coordination of the atoms in galena compare to those in halite andhow do the structures of these two minerals compare? (c) Calculate the radius ratio for the ions in fluorite and determine what the coordinationof Ca2 is in this mineral. (d) It should be clear that the structure of fluorite is different from galena (based on theunit cell models and your calculations). Why do you think they (must) have differentstructures? Question 2 In Problem Set 1 you calculated the bond strengths for fluorite and hematite in terms of the

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