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(i)
Interpretation:
The point group of a sharpened cylindrical pencil has to be stated.
Concept introduction:
A symmetry operation is defined as an action on an object to reproduce an arrangement that is identical to its original spatial arrangement. The spatial arrangement of the object remains identical after a symmetry operation. The point of reference through which a symmetry operation takes place is termed as a symmetry element.
(ii)
Interpretation:
The point group of a box with rectangular cross section has to be stated.
Concept introduction:
A symmetry operation is defined as an action on an object to reproduce an arrangement that is identical to its original spatial arrangement. The spatial arrangement of the object remains identical after a symmetry operation. The point of reference through which a symmetry operation takes place is termed as a symmetry element.
(iii)
Interpretation:
The point group of a coffee mug with handle has to be stated.
Concept introduction:
A symmetry operation is defined as an action on an object to reproduce an arrangement that is identical to its original spatial arrangement. The spatial arrangement of the object remains identical after a symmetry operation. The point of reference through which a symmetry operation takes place is termed as a symmetry element.
(iv)
Interpretation:
The point group of a three bladed propeller having flat blades has to be stated.
Concept introduction:
A symmetry operation is defined as an action on an object to reproduce an arrangement that is identical to its original spatial arrangement. The spatial arrangement of the object remains identical after a symmetry operation. The point of reference through which a symmetry operation takes place is termed as a symmetry element.
(v)
Interpretation:
The point group of a three bladed propeller having out of plane blades has to be stated.
Concept introduction:
A symmetry operation is defined as an action on an object to reproduce an arrangement that is identical to its original spatial arrangement. The spatial arrangement of the object remains identical after a symmetry operation. The point of reference through which a symmetry operation takes place is termed as a symmetry element.
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Chapter 10 Solutions
PHYSICAL CHEMISTRY-WEBASSIGN
- 7. Magnesium is found in nature in the form of carbonates and sulfates. One of the major natural sources of zinc is zinc blende (ZnS). Use relevant concepts of acid-base theory to explain this combination of cations and anions in these minerals. (2 points)arrow_forward6. AlF3 is insoluble in liquid HF but dissolves if NaF is present. When BF3 is added to the solution, AlF3 precipitates. Write out chemical processes and explain them using the principles of Lewis acid-base theory. (6 points)arrow_forward5. Zinc oxide is amphoteric. Write out chemical reactions for dissolution of ZnO in HCl(aq) and in NaOH(aq). (3 points)arrow_forward
- Draw the product(s) formed when alkene A is reacted with ozone, followed by Zn and H₂O. If no second product is formed, do not draw a structure in the second box. Higher Molecular Weight Product A Lower Molecular Weight Product draw structure ... draw structure ...arrow_forwardRank A - D in order of increasing rate of reaction with H2 and Pd/C. ب ب ب ب A B с Which option correctly ranks the alkenes in order of increasing rate of reaction with H₂ and Pd/C? О Barrow_forwardDraw the product of the following Sharpless epoxidation, including stereochemistry. Click the "draw structure" button to launch the drawing utility. -OH (CH3)3C-OOH Ti[OCH(CH3)2]4 (+)-DET draw structure ... Guidarrow_forwardWhat alkyne (or diyne) yields the following oxidative cleavage products? Click the "draw structure" button to launch the drawing utility. draw structure ... CO₂ + OHarrow_forwardlighting discharges in the atmosphere catalyze the conversion of nitrogen to nitric oxide. How many grams of nitrogen would be required to make 25.0 g of nitric oxide in this way ?arrow_forwardThe electron of a hydrogen atom is excited to the 4d orbital. Calculate the energy of the emitted photon if the electron were to move to each of the following orbitals: (a) 1s; (b) 2p; (c) 2s; (d) 4s. (e) Suppose the outermost electron of a potassium atom were excited to a 4d orbital and then moved to each of these same orbitals. Describe qualitatively the differences that would be found between the emission spectra of potassium and hydrogen (do not perform calculations). Explain your answer.arrow_forwardImagine a four-dimensional world. In it, atoms would have one s orbital and four p orbitals in a given shell. (a) Describe the shape of the Periodic Table of the first 24 elements. (b) What elements would be the first two noble gases (use the names from our world that correspond to the atomic numbers).arrow_forwardThe electron affinity of thulium was measured by a technique called laser photodetachment electron spectroscopy. In this technique, a gaseous beam of anions of an element is bombarded with photons from a laser. The photons knock electrons off some of the anions, and the energies of the emitted electrons are detected. The incident radiation had a wavelength of 1064 nm, and the emitted electrons had an energy of 0.137 eV. Although the analysis is more complicated, we can obtain an estimate of the electron affinity from the energy difference between the photons and the emitted electrons. What is the electron affinity of thulium in electron volts and in kilojoules per mole?arrow_forwardBe sure to answer all parts. The following alkyne is treated with 03 followed by H₂O. Part 1: How many different compounds are formed in this process? 1 Part 2 out of 2 Draw the product of the reaction. draw structure ...arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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