\text { The point }\left(4, \pi, \frac{\pi}{4}\right) \text { is given in spherical coordinates. Its rectangular coordinates are: }

Zn2+complexes are atypical of d-block complexes in general. Which answer below is correct and supports this statement? Zn-T complexesare always octahedral. D. Zn-+ complexes are always tetrahedral. Zn2+ complexes are paramagnetic. d. Zn2+complexes tend to be colourless. e. Z is one of several oxidation states of Zn.2+

The observed rate constant kobs for ligand substitution reactions at square planar platinum(II) complexes is a combination of the rate constants from competing pathways with (kı) and without (k2) solvent participation. The rate constant (k2) for the substitution of a chloride in trans-[Pt(py)2C12] by different ligands (Y) in methanol solvent at 30 °C and the nucleophilicity parameter (npi) of these ligands is given below:(c) when Y = MeOH=solvent; the rate of reaction is 0.00027 s-'. Use this data to calculate the nucleophilic discrimination factor (s) for the complex [Pt(py)2C12]. Show all of your working. (py = pyridine) In methanol solvent at 30 °C the nucleophilic discrimination factor (s) for[Pt(dien)(OH2)]* = 0.44. Using your value of s from part (i) would you expect [Pt(dien)(OH2)]2* to be generally more or less reactive towards ligand substitution? Explain your answer.dien=diethylenetriamine H2N(CH2)2NH(CH2)2NH2)

QUESTION 3: In question 2 you worked with octahedral complex anions of [VCl₂(O₂CCO₂)₂]³ in this question you are asked to consider trigonal prismatic [VCl₂(0₂CCO2)2]³ complex anions. a) Draw 2 distinguishable isomers of the [VCl₂(O₂CCO2)2]³ complex with trigonal prismatic geometry and determine their point groups. You must use dashes and wedges correctly. Indicate all atoms including the ligand atoms. i. Isomer 3 (trigonal prismatic): 3-dimensional structure: Point group:

Click the reset button.Keep the "bent" arrangement of atoms and set the electronegativities of A and C to high and B to middle. Click to show the bond dipoles,molecular dipoles and partial charges. Draw the bond dipoles on the bonds in the diagram Show the overall molecular dipole in the diagram Draw the partial charge symbols on the diagram.

Which of the following Newman projections represents the least stable (highest energy)conformer of 1,2-dibromoethane? Select one: a. A is the least stable conformer b. B is the least stable conformer c. C is the least stable conformer d. D is the least stable conformer e. E is the least stable conformer

Consider the complex ion comprising Co() as the metal centre coordinated to two ethylene diamine fig ands and one oxalato ligand. The donor set of this complex would be:50to this answer.NON O N50 O N204 O N6O N202 O N402

Rotate the molecule to keep the "linear" arrangement (see below) and set the electronegativities of A to high, keep B to middle and set C to low. Click to show the bond dipoles, molecular dipoles and partial charges. Draw the bond dipoles on the bonds inthe diagram Show the overall molecular dipole in thediagram Draw the partial charge symbols diagram.

Which of the following observations for the complex ion [Cr(CN)6] is the most likely to represent the observed magnetic moment of the complex. [Cr(CN)6] is diamagnetic. -[Cr(CN)6]3is paramagnetic with Hobs 2.82 HB [C{CN)6]3-is paramagnetic with Hobs = 4.90 HB d. [Cr(CN)6] is paramagnetic with Hobs = 1.73 HB =- [Cr(CN)6]is paramagnetic with Hobs 3.87 HB

QUESTION 1: You have prepared for the first time ever the XeCl3FO₂ molecule. Naturally the molecule can only be prepared at very low temperatures and tends to undergo instantaneous decomposition into its elements at elevated temperatures. a) You are storing 2 grams of XeCl3FO₂ in a sealed flask at 111 Kelvin. You decompose XeCI-FO₂ into its elements by raising the temperature in sealed flask to 20°C. (i) Write down the decomposition reaction. (ii) Calculate the minimum volume of this flask (in units of liters) in order to keep the pressure at 20°C below 3 bar.

How many isomers are possible for an alkene that has a molecular formula of C4H7Br?{Hint: the best way to approach questions like this is to draw the carbon frameworks and then attach the bromine atom in the unique positions in each of these frameworks.}