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- The precious metal platinum was first used by indigenous peoples of South America, who found impure, native samples of it in the Au mines of what is now Ecuador and used the samples to make small items of jewelry. Platinum’s high melting point (1772oC) makes it harder to work than Au (1064oC) and Ag (962oC), but this same property and a high resistance to chemical attack make Pt suitable as a material for high-temperature crucibles. Although Pt is a noble metal, in the +4 and +2 states it forms a variety of compounds, many of which are coordination complexes. Its coordinating abilities make it an important catalyst for organic and inorganic reactions. The anticancer cisplatin (mentioned during lectures) can be prepared from K2PtCl6 via reduction with hydrazine (N2H4), giving K2PtCl4, followed by replacement of the 2 Cl ion ligands with NH3. Give the names to the three platinum compounds referred to. Draw coordination complex trans-Platinum diammine dichloride and label the Pt with its…Name the following: a) Na3[FeBr6] b) [Cr(CN)2(H2O)]2+ c) [CoCl2(NH3)(en)2]Cl Give formulas for the following: d) dihydroxotetraaquaaluminum (IV) ion e) lithium tetranitrodiaminozincate (II) Please use English names for metals, not Latin names.Solid Mg2B205 contains the "pyroborate" anion. Draw the structure for this ion. What are other isoelectronic species? asap please.
- Mixing SbCl 3 and GaCl 3 in a one-to-one ratio gives a solid ionic compound of empirical formula GaSbCl 6 . A controversyerupts over whether this compound is [SbCl 2 ] + [GaCl 4 ] ─ or [GaCl 2 ] + [SbCl 4 ] ─ . It is learned that the cation in the compound has abent structure. Based on this fact, which combination is more likely to be correct? Explain.What is the charge on the Cr ions in Cr2O3?In the compound Pt(C2H3O2)2, what is the charge on the platinum?
- 1.) The 3rd ionization energy of Fe is Ei3= +2952kj/mole. What is the longest wavelength of light that could ionize Fe2+ to Fe3+? 2.) What is the mass of K2C2O4 produced using the 12.0g of oxalic acid if the percent yield of the reaction was 87.5%?How would you draw the isomer structure(s) for [Cr(en)2BrCl] 1+An element X reacts with F2(g) to form the molecular productshown here. (a) Write a balanced equation for this reaction(do not worry about the phases for X and the product).(b) Do you think that X is a metal or nonmetal?
- what is the difference between fe(s) and fe3+ at the atomic level?Write a post that sorts the compounds into 4 different groups. Explain what commonalities led you to group those compounds together. LiNO2, Na2S, PbS, CaCO3, BaSO4, NH4Cl, K2SO4, ZnCrO4, MgCl2, Ca3(PO4)2Zinc in its 2+ oxidation state is an essential metal ion for life. Zn2+ is found bound to many proteins that are involved in biological processes, but unfortunately Zn2+ is hard to detect by common chemical methods. Therefore, scientists who are interested in studying Zn2+- containing proteins will frequently substitute Cd2+ for Zn2+ since Cd2+ is easier to detect. Based on the properties from this chapter and their positions in the periodic tables, provide one pro and one con of using Cd2+ as a Zn2+ substitute?