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Inorganic Chemistry
10. a) Arrive at the Lewis structure of XeF4 using the steps given in Unit 3.
b) Predict the hybridization state of each carbon atom in allene which has the following
structure:
CH2 = C = CH2
c) Calculate the number of normal modes of vibration for the following compounds:
i) H2O
CH4
ii) HBr
b) Predict the hybridization state of each carbon atom in allene which has the following
structure:
CH2 = C = CH2
c) Calculate the number of normal modes of vibration for the following compounds:
i) H2O
CH4
ii) HBr
Inorganic Chemistry
a) Explain why [Ni(CN)4—]2- is square planar.
b) What is the chelate effect? What is the principal thermodynamic driving force behind the chelate effect?
A pink solid (1) has the empirical formula CoCI3.5NH3.H2O. An aqueous solution of 1 is also pink and rapidly precipitates three moles of AgCI on titration with a AgNO3 solution. When 1 is heated it loses 1 mol of H2O to give a purple solid (2) with the same Co:NH3:Cl ratio as 1. On titration with a AgNO3 solution, 2 precipitates 2 moles of AgCl. Deduce and draw the structures of the two octahedral complexes of Co, 1 and 2.
d) State the types of isomerism that may be exhibited by the following complex, [Cr(en)2(H2O)2] 3+, and draw the structure for each isomer
en = 1,2-diaminoethane.
b) What is the chelate effect? What is the principal thermodynamic driving force behind the chelate effect?
A pink solid (1) has the empirical formula CoCI3.5NH3.H2O. An aqueous solution of 1 is also pink and rapidly precipitates three moles of AgCI on titration with a AgNO3 solution. When 1 is heated it loses 1 mol of H2O to give a purple solid (2) with the same Co:NH3:Cl ratio as 1. On titration with a AgNO3 solution, 2 precipitates 2 moles of AgCl. Deduce and draw the structures of the two octahedral complexes of Co, 1 and 2.
d) State the types of isomerism that may be exhibited by the following complex, [Cr(en)2(H2O)2] 3+, and draw the structure for each isomer
en = 1,2-diaminoethane.
Inorganic Chemistry
a) The rate constant of for the exchange of a single water molecule in the complex [Cu(H2O)s] 2+ is one of the fastest known for a metal complex. Explain why it is so fast.
b) Determine the magnitude of the crystal field stabilisation energy in terms of for the following complexes:
[Cr(H2O)6) 3 +, [Mn(CO)6]+
b) Determine the magnitude of the crystal field stabilisation energy in terms of for the following complexes:
[Cr(H2O)6) 3 +, [Mn(CO)6]+
Inorganic Chemistry
a) There are three compounds (A, B & C) with the formula CrCl3.6H2O. A is violet in colour; when an aqueous solution of A is treated with
AgNO , 3 moles of AgCI per mole of A are produced; A doesn’t lose any water in a desiccator.
B is grey-green in colour; when an aqueous solution of B is treated with AgNO3, it produces 2 moles of AgCl per mole of B; one mole of B loses one mole of water when kept in a desiccator.
C is deep green in colour; when an aqueous solution of C is treated with AgNO3, 3 moles of AgCl per mole of C are produced; one mole of C loses two moles of water when kept in a desiccator.
Identify A, B and C and state what type of isomerism these compounds exhibit.
b) Draw the d-orbital splitting diagram for [Fe(CN)6]-2 and state whether it is
a high-spin or low-spin complex. How would you confirm this
experimentally?
) Draw the structure of [Ni(CN)4]2-, showing the stereochemistry. Use crystal field splitting arguments to explain your answer.
AgNO , 3 moles of AgCI per mole of A are produced; A doesn’t lose any water in a desiccator.
B is grey-green in colour; when an aqueous solution of B is treated with AgNO3, it produces 2 moles of AgCl per mole of B; one mole of B loses one mole of water when kept in a desiccator.
C is deep green in colour; when an aqueous solution of C is treated with AgNO3, 3 moles of AgCl per mole of C are produced; one mole of C loses two moles of water when kept in a desiccator.
Identify A, B and C and state what type of isomerism these compounds exhibit.
b) Draw the d-orbital splitting diagram for [Fe(CN)6]-2 and state whether it is
a high-spin or low-spin complex. How would you confirm this
experimentally?
) Draw the structure of [Ni(CN)4]2-, showing the stereochemistry. Use crystal field splitting arguments to explain your answer.
Inorganic Chemistry
Although the 4s orbitals are occupied before 3d orbitals, yet we cannot say that they are always more stable. Explain with suitable examples.
Inorganic Chemistry
Which metal are called class 'a' elements or 'hard acid' and why?
Inorganic Chemistry
Describe the common features which can be explained by the theoretical model of Bohr?
Briefly write the limitation of this model.
Briefly write the limitation of this model.
Inorganic Chemistry
Calculate the ionization energy of hydrogen atom using Bohr’s theory.
Inorganic Chemistry
b) Determine the wavelength for a transition from the = 0 to the = 1 level. Is this
transition in the IR region of the electromagnetic spectrum?
c) Which of the following molecules exhibit rotational and or vibrational spectra
H2, HF, CO, NO
transition in the IR region of the electromagnetic spectrum?
c) Which of the following molecules exhibit rotational and or vibrational spectra
H2, HF, CO, NO
Inorganic Chemistry
Name the cations that are largest single atom cations.
