Which of the following correctly lists the elements in order of increasing electronegativity? OF, Cs, S, CI Br, Se, As, Ge O Na, Si, P, F Be, Ca, Sr, Ba OCs, Na, K, Li
Q: AN BOLI 1. LDA, THF, -78 °C 2. Me-1
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A: Information of question
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Q: CH3 (Et),NH H₂O* 1) LDA,-78ºC 2) Br Н OH H OH H3O* NaOH 25%
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- Identify the stable e-configurations in the formation of the following ions: K+, Mg2+, S2-, Zn2+, Pb2+, Pb4+, Mn2+, Fe3+ by writing the ionization processe.For each pair, choose the compound with the smaller latticeenergy, and explain your choice: (a) CaS or BaS (b) NaF or MgOUse the following data to estimate AH; for potassium bromide. K(s) + Br2 (9) - KBr(a) Lattice energy -671 kJ/mol Ionization energy for K 419 kJ/mol Electron affinity of Br -325 kJ/mol Bond energy of Br2 Enthalpy of sublimation for K 193 kJ/mol 90. kJ/mol AH = kJ/mol
- Determine the second ionization energy of calcium (in kJ mol-1) from the given data (all in kJ mol-1): AH°[CaCl,(s)] = -796 AH¡[Ca(g)] = 178 AH°[CI(g)] = 122 First ionization energy of Ca(g) = 590 Electron affinity of Cl(g) = -349 Lattice enthalpy of CaCl,(s) = -2260 А 1150 В 1235 C 1093 D 1210Define the following phenomena with reference to main group compounds: (d) multicenter electron deficient bondingBond dissociation energy of F2 is less than that of Cl2 . Why?
- What is the correct order of electron accepting tendency of group 13 elements. A B Ga > In D Al > B > Ga > In I am told the correct order is Option A why? BLAlGaIn is the better electron acceptor in the (B) Boron (In) Indium is the weakest electron acceptor in Yet the correct answer is BPredict the best choice in each of the following. You may wish to review the chapter on electronic structure for relevant examples.(a) the most metallic of the elements Al, Be, and Ba(b) the most covalent of the compounds NaCl, CaCl2, and BeCl2(c) the lowest first ionization energy among the elements Rb, K, and Li(d) the smallest among Al, Al+, and Al3+(e) the largest among Cs+, Ba2+, and Xe9. Given the following information: 2NO(g) - O(g) - 2NO-(g) 2N:(g) + 50:(3) + 21H:0(C) HINO(ag) AH--116 J All = -256 J N:(g) + 0,(g)- 2) AH =+183 k Caleulate the enthalpy change for the reaction below: INO () +HO(() -UINO,(ag) + NO(g) AH=?The main reason alkali metal dihalides (MX₂) do notformis the high IE₂ of the metal. (a) Why is IE₂ so high for alkalimetals? (b) The IE2for Cs is 2255 kJ/mol, low enough for CsF₂to form exothermically (ΔHf=-125 kJ/mol). This compoundcannot be synthesized, however, because CsF forms with a muchgreater release of heat (ΔHf=-530 kJ/mol). Thus, the break-down of CsF₂ to CsF happens readily. Write the equation for thisbreakdown, and calculate the heat of reaction per mole of CsF.Which of the following is diamagnetic?2. Arrange the following electron deficient species in the decreasing of their stability. Your answer should be based on proper reason: (b) (c) (d) (0)SEE MORE QUESTIONS