Inorganic Chemistry

Use this for “The 3N motions of CH₂Cl₂ give Γ = 15, −1, 3, 3. Reduce Γ and find how many vibrations are IR active.”

Use this for “Work out the point group of PCl₅. Which question do you ask first?”

Use this for “Count the valence electrons of [Co(CO)₄]⁻ and of Mn(CO)₅Cl. Does each obey the 18-electron rule?”

Use this for “Does [Cr(H₂O)₄Br₂]⁺ have geometric isomers, optical isomers, or neither?”

Use this for “[Ti(H₂O)₆]³⁺ absorbs most strongly at 500 nm. Find Δₒ in cm⁻¹ and in kJ/mol. What color does the solution look?”

Use this for “Which gives the larger Δₒ with Co³⁺: fluoride, ammonia or cyanide? Which complex is more likely low spin?”

Use this for “Mg²⁺ is 72 pm and O²⁻ is 140 pm across. Predict the coordination number, then MgO’s rock-salt edge and density (40.30 g/mol).”

Use this for “Tungsten is cubic with a = 316.5 pm. Find the spacing of its (110) planes and the angle 2θ of their peak with 154.2 pm X-rays.”

Use this for “MgO has the rock-salt structure with r₀ = 210 pm and Born exponent 7. Estimate its lattice energy.”

Use this for “What kind of hydride is CaH₂? Which gas forms when it is added to water?”

Use this for “Which is more stable, PbCl₂ or PbCl₄? Why is PbO₂ a strong oxidizing agent?”

Use this for “Cu⁺ has I = 20.29 eV and EA = 7.73 eV. Find its absolute hardness η and its Mulliken electronegativity χ.”

Use this for “Is PR₃ a hard or a soft base? Does it bind Pt²⁺ or Mg²⁺ more strongly?”

Use this for “Why is [Mn(H₂O)₆]²⁺ so pale while MnO₄⁻ is intensely purple? Which has the larger ε?”

Use this for “How many spin-allowed d–d bands does [V(H₂O)₆]³⁺ show? And [Fe(H₂O)₆]²⁺?”

Use this for “IrCl(CO)(PPh₃)₂ reacts with H₂ to give IrH₂Cl(CO)(PPh₃)₂. Which elementary step is this, and how do the oxidation state and coordination number change?”

Use this for “Put the steps of the hydrogenation of propene by RhCl(PPh₃)₃ in order, and name each elementary step.”

Use this for “Which metal ion sits at the active site of carbonic anhydrase, and what does it do there?”