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Problem 1 Explain the symmetry elements of the crystals that have the following space groups: P4"21 c Ccc2 141 cd P63 mc Fdd2
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- QUESTION 2 - SYMMETRY a Determine the point groups to which the following chemical species belong: PCI 3 (P has pyramidal geometry) BC|3 (B has trigonal planar geometry) BCI₂F (B has trigonal planar geometry) B(CI)(Br)F (B has trigonal planar geometry) CO₂ i ii iii iv VPlz fast solve this question List the point symmetry elements for the cubic (43m). The photos included show geometry. The elements I am looking for are reflection, rotations, inversion. Please list these clear and simple. Thank youIdentify the HOMO in the MO diagram of CN- (shown below). Op %23 - Tp A) o (2s orbitals) B) o (2pz orbitals) C) T (2px and 2py) D) T* (2px and 2py) E) о* (2pz)
- 3. Transition metals of the periodic table are known to adopt either a tetrahedral or square planar configuration when it has a coordination number of 4. Consider the inorganic complex ZrI4. a) Draw the structure, determine all symmetry elements and operations, and assign point group classification of Zr14 if it is tetrahedral, and square planar. (10 pts) b) If Zrl is tetrahedral, how many IR absorption peaks is expected given its point group classification? (2 pts) c) If Zrl4 is square planar, how many IR absorption peaks is expected given its point group (2 pts) classification? d) The IR spectrum of gaseous Zrl4 shows absorption peaks at 55 cm-1 and 245 cm-1. This data is consistent with what shape of ZrI4. (2 pts)6 and 6 Question 32 The point group for CO is : Not yet answered Select one: Marked out of 1.45 O Deh P Flag question O Coy PREVIOUS PAGE 可 144Chemistry Exercie : showing the primitive lattice with the 21-fold screw axis parallel to b-axis, the c-glide plane being perpendicular to b-axis with glide of . Answer the following questions. Let us consider the monoclinic space group denoted by P2,/c. (1) Illustrate the symmetry of this space lattice such as a symmetry center and show both general position and special positions. (2) Find the extinction condition.
- Reduce the following reducible representation:C3v E 2C3 3σv 6 0 -2Using the relationships imposed by the orthogonality theorem, predict the characters, XK(R), that have been omitted from this table, and match each with its correct value. All symmetry elements and irreducible representations (labelled with subscripts k = 1, 2, 3, 4, and 5) are included in this table. + X2(C3) ◆ X3(C₂) + X4(0d) X5(E) - ₁₁ [₂ [3 T4 [5 E 1 3 1 3 _?___ 6 S4 8 C3 1 1 1 -1 T -1 0 ? 1 0 -1 A. 1 B.-2 C. 2 D.-1 E. 3 F. 0 3 C₂ 1 -1 ? 어 -1 2 60d 1 -1 -1 ? OThe complete set of symmetry elements in CHC13 are: Select one: O E, C3, 30y O Ca, 30y S3 O E, C3, 30h E, C3, 3C2, 30y Clear my choice FINIS
- Question 1 Explain what is meant by symmetry operations and symmetry elements. List the symmetry elements for each of the following molecules: (1) (ii) chloroform (iii) chlorobenzene (iv) NO₂ (bent) (a) (b) naphthaleneWhich pair of transition metal ions would be expected to have the same magnetic moment? Group of answer choices V2+ and Co2+ Fe2+ and Co2+ Ti2+ and Mn2+ Ni2+ and Cu2+Identify the hybridizatlon of the Indicated atoms In the structure shown below, NO II III O 1) sp. (1) sp () sp 020 sp, (m sp (I) sp 030 sp an sp an sp றsp- 05p° (lysp'