I just graduated with a PhD in environmental engineering. I have taught reviews courses for college level chemistry. I have also been a teaching assistant for various engineering courses focused on project design. I have a background in college level chemistry, microbiology, math, and engineering.
Which would you expect to be the more ductile element, (a) Ag or Mo, ( b) Zn or Si? In each case explain your reasoning.
These questions are designed to be considered by groups of students in class. Often these questions work well for introducing a particular topic in class.You isolate a compound with the formula $\mathrm{Pt} \mathrm{Cl}_{4} \cdot 2 \mathrm{KCl}$ From electrical conductance tests of an aqueous solution of the compound, you find that three ions are present, and you also notice that the addition of AgNO $_{3}$ does not cause a precipitate. Give the formula for this compound that shows the complex ion present. Explain your findings, and name this compound.
These questions are designed to be considered by groups of students in class. Often these questions work well for introducing a particular topic in class.Both $\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{4}^{2+}$ and $\mathrm{Ni}(\mathrm{CN})_{4}^{2-}$ have four ligands. The first is paramagnetic and the second is diamagnetic. Are the complex ions tetrahedral or square planar? Explain.
These questions are designed to be considered by groups of students in class. Often these questions work well for introducing a particular topic in class.Which is more likely to be paramagnetic, $\mathrm{Fe}(\mathrm{CN})_{6}^{4-}$ or $\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}^{2+} ?$ Explain.
These questions are designed to be considered by groups of students in class. Often these questions work well for introducing a particular topic in class.A metal ion in a high-spin octahedral complex has two more unpaired electrons than the same ion does in a lowspin octahedral complex. Name some possible metal ions for which this arrangement would apply.
These questions are designed to be considered by groups of students in class. Often these questions work well for introducing a particular topic in class.Discuss the advantages and disadvantages of the molecular orbital model and the crystal field model. Under which circumstances is it more useful to use the MO model? The crystal field model?
