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- 13) Give the correct bond-line structure for the following compounds (drawing bonds as lines). Clearly show all bonds, electron pairs, and formal charges when present. Ionic bonds, if present, must be clearly marked using formal charges. (CH3)2CHCHBrOH Na o N oThe structural formulas for ethanol, CH3CH2OH, and propene, CH;CH=CH,2, are нн H Н—С—С—0—н H-C-C=C-H нн H H H Ethanol Propene (a) Complete the Lewis structure for each molecule showing all valence electrons. (b) Using the VSEPR model, predict all bond angles in each molecule.(a) Determine the formal charge of oxygen in the following structure. If the atom is formally neutral, indicate a charge of zero. (b) Draw an alternative Lewis (resonance) structure for the compound given in part (a). Show the unshared pairs and nonzero formal charges in your structure. Don't use radicals. Formal charge on O 0
- II. Please expand each of the following bond-line formulas to the corresponding standard Lewis structure, be sure to show all the bonds and unshared electron pairs as well as formal charges, if it applies. 0: (a) (c) O Br | Br-B-Br -N- (b) HO: NO₂ 0: blos ohsup?Write the Lewis structures of both isomers with the formula C2H7N.Another amino acid is alanine, which has the Lewis structure shown here. Predict the electron-pair geometry and local structure of the nitrogen atom, the three carbon atoms, and the oxygen atom with hydrogen attached:
- There are 3 constitutional isomers having the molecular formula: C2H4O Each molecule only contains carbon, hydrogen, and oxygen atoms, and each atom should have a formal charge of zero. Draw Lewis structures for 2 of the isomers that have the given molecular formula.5. Show the structure of Teflon by drawing several repeating units. The monomer unit is tetrafluoroethylene, F2C=CF2. 6. Draw resonance structures for the following species: (a) CH2 (b) :0: (c) H. нн2. Below are drawn four possible isomers (partial Lewis structures with different atomic connectivity) for an anion with the molecular formula C₂H4NO. 10 A B D "TOTT" raptor H H -0- (a) First, add enough electrons as either lone pairs or r bonds to give an overall negative charge. Show all lone pairs in each completed Lewis structure, and show any atomic formal charges that result. (b) Then, for each isomer, consider if other resonance structures can contribute. Since this is an anion, look for a strong electron donor with an adjacent electron acceptor. For each additional resonance structure you draw (some isomers may have more than one additional RS, some may have none), circle the electron pairs in the original Lewis structure which have moved, and draw a curved arrow depicting the motion required to create the new RS. If you have colored pens, color coding your electrons pairs is nice (but not required).
- In the following compounds, the C atoms form a single ring.Draw a Lewis structure for each compound, identify cases for which resonance exists, and determine the carbon-carbon bondorder(s): (a) C₃H₄; (b) C₃H₆; (c) C₄H₆; (d) C₄H₄; (e) C₆H₆.Draw the shapes of the following molecules and ions in 3-dimension. Show clearly any lone pairs of electrons on the central atom, state the number of bond pairs and lone pairs of electrons on the central atom and name the shape of the molecule or ion. (a) SiCI4, silicon tetrachloride (b) PBr3, phosphorus tribromide (c) CI2O, dichlorine oxide Provide everything stated in the instructions for each compound.Following is a structural formula for guanidine, the compound by which migratory birds excrete excess metabolic nitrogen. The hydrochloride salt of this compound is a white crystalline powder, freely soluble in water and ethanol. Q.Write a Lewis structure for guanidine showing all valence electrons