A certain form of AgI adopts the zincblende (ZnS & FCC)structure. The density of the salt is 5.69 g/cm3. a) Calculate the length of a side of the unit cell b) Calculate the distance between the Ag+ and the I- ions in the structure.
The alkaline earth oxides MgO and BaO adopt the rock salt (NaCl) structure with cell parameters a of 4.213 à… and 5.139 à…. Using 1.40 à… as the radius for the oxide ion: a) Calculate the radius ratios r(M2+) / r(O2-) for these compounds b) Using the radius ratio rule, indicate whether or not the value found are in agreeme ...continues
(1.) What are the two types of layer arrangement in metals? Which has the closer packing? (2.) What properties of a compound would lead you to expect that it contains ionic bonds? (3.) Which one of each of the following pairs will be smaller? Explain your reasoning in each case. (a.) K or K+ (b.) K+ or Ca2+ (c ...continues
this is a midterm from last year chem 331 (inorganic)
please do all of the midterm. These are the sections that will be covered in our midterm please complete with long explinations as well as giving realated info to questions asked.thanks. (if you are not confident in your answers please do not attempt this question)
Calculate the standard enthalpy of formation of gaseous diborane, B2H6, using the following thermochemical information: (See attachment for full question)
For water, (delta)Hfus = + 6.01 kJ/mol and (delta)Hvap = +40.67 kJ/mol. What is the enthalpy change associated with the deposition of 1.24 mol of water vapor?
1. Write net ionic equations to correspond with each of the following molecular equations. (a.) HCl(aq) + NaOH(aq) NaOH(aq) + H2O(l) (b.) Na2CO3(aq) + CoCl2(aq) 2 NaCl(aq) + CoCO2(s) (c.) NH3OH(aq) + CH3COOH(aq) CH3COONH4(aq) + H2O(l) 2. Define the following terms: (a.) conjugate acid-base pairs (b.) self-ionizatio ...continues
Aluminum oxide (Al2O3) is a widely used industrial abrasive (corundum, emery), with its specific application depending on the hardness of the crystal a) How is the hardness of an ionic material related to its lattice energy? b) Knowing the relationships between lattice energy and: 1) charges and 2) atomic radii, would you ...continues
The alkali metal hexachloroplatinates: Na2[PtCl6], K2[PtCl6], Rb2[PtCl6], Cs2[PtCl6] have the same type of lattice structure. How would you expect the solubility of these salts to vary (increase or decrease) from the sodium salt to the cesium salt? Explain your answer.
please give a complete MO description of the molecule HF.
