Draw the shape of the PFs molecule and answer the following questions: (i) What is the principal rotation axis of the PFs molecule? (ii) Does the molecule have other rotation axes? If so, what are the other rotation axes of the molecule? (iii) Does the molecule have improper rotation axes? If so, what is the improper rotation
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- (a) Draw a Lewis diagram for formaldehyde (H,CO), and decide the hybridization of the central carbon atom. (b) Formulate the molecular orbitals for the molecule. (c) A strong absorption is observed in the ultraviolet region of the spectrum and is attributed to a → T* transition. Another, weaker transition is observed atThe vibrations of a CO2 molecule are symmetrical stretch, bend, and asymmetrical stretch (Figure ), with frequencies of 4.02x1013 s-1, 2.00x1013 s-1, and 7.05x1013 s-1, respectively. (a) What wavelengths correspond to these vibrations? (b) Calculate the energy (in J) of each vibration. Which uses the least energy?QUESTION 1 Draw the shape of the PFs molecule and answer the following questions: (i) What is the principal rotation axis of the PFs molecule? (ii) Does the molecule have other rotation axes? If so, what are the other rotation axes of the molecule? (iii) Does the molecule have improper rotation axes? If so, what is the improper rotation axis of the molecule? (iv) Does the molecule have o, mirror plane(s)? If so, how many? (v) Does the molecule have o, mirror plane(s)? If so, how many? (vi) Does the molecule have oa mirror plane(s)? If so, how many? (vii) What is the point group of the PFs molecule? (viii) What is the order of the point group of the PFs molecule? (ix) Using symmetry criteria, predict if the PFs molecule is polar or non-polar. (x) Using symmetry criteria, predict if the PFs molecule is chiral or non-chiral.
- TOPIC: QUANTUM, ATOMIC AND MOLECULAR PHYSICIS (a) Using Hückel's method, describe the energy of the molecular orbitals T of cyclobutadiene C4H4, which is a flat molecule made up of a square ring of carbons, as shown in the figure; (b) Do the same for 1,3-butadiene C4H6, which is an elongated planar molecule, as shown in the figure. (c) In both cases, draw an energy diagram indicating the filling of the orbitals and identifying the HOMO and the LUMO. Sketch by hand schematically (using two colors to distinguish the lobes from the 2pz orbitals) the result obtained for the orbitals, identifying them with the corresponding energy. If possible, you can use the Orbital Viewer program to plot the orbitals.The molecule shown here is difluoromethane 1CH2F22, which isused as a refrigerant called R-32. (a) Based on the structure, howmany electron domains surround the C atom in this molecule?(b) Would the molecule have a nonzero dipole moment? (c) Ifthe molecule is polar, which of the following describes the directionof the overall dipole moment vector in the molecule:(i) from the carbon atom toward a fluorine atom, (ii) from thecarbon atom to a point midway between the fluorine atoms,(iii) from the carbon atom to a point midway between the hydrogenatoms, or (iv) from the carbon atom toward a hydrogenatom? [Sections 9.2 and 9.3]9.5How do call the measurement of optical activity and the change in polarization orientation. O Polarimetry Optical rotation O Refractometer O Polarimeter
- What is the correct electron configuration for the molecularorbital of B2+? (5B) diboroneDraw the structure of the four tertiary (3°) amines with molecular formula C6H15N that contain a group with 4 carbon atoms. and Draw the structure of the two tertiary (3°) alcohols with the molecular formula C7H16O that contain a only one CH3 group attached to the main carbon chain.Here is the ground-state electron configuration of a -1 anion of an unknown Element E. [Kr] 1L1L|1L||1L||1L||1L||1L||1L1L 4d 5 s 5p Use this diagram to answer the questions below. What is Element E? Write its chemical symbol. How many unpaired electron spins are there in this anion?
- The isoprene molecule has the following structure: H H H H C H C C H C CIH C-H Draw the 7 orbitals for the four lowest energy states of isoprene. ㅠWhat is the electronic configuration of Ca2+ ?Draw an example for each case, showing the geometry of AXmYn(where X=bonded atomsand Y=lone pair electrons) with the combinations of(a) m=5, n=1 (b) m=4, n=2, (c) m=5, n=0, (d) m=2, n=2 (e) m=3, n=2