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- Experimental evidence indicates the existence of HC3N molecules in interstellar clouds. Write a plausible Lewis structure for this molecule.Two compounds have the formula S2F2. Disulfur difluoride has the skeleton structure FSSF, whereas thiothionyl fluoride has the skeletal structure Determine Lewis structures for each compound.What is the formal charge on each atom in HNO3 and the Lewis structure for it?
- 1.) What is the Lewis structure for the methylthiolate anion, CH3S-. Carbon is the central atom. Show any nonzero formal charges. 2.) Proteins are large molecules that affect almost every function of the human body. Proteins are composed of smaller building blocks called amino acids. The simplest amino acid is glycine. When dissolved in water, two atoms in a glycine molecule have a formal charge. In the lewis structure of glycine C2H5NO2 all bonds are drawn (image is provided), but the unbonded valence electrons (lone pairs) are missing. Copy the structure and draw the missing valence electrons (lone pairs). Locate the 2 atoms that have a nonzero formal charge. Calculate the charge at these sites.The following is a skeleton of a molecular anion having the overall formula C7H6NO–. The H atoms are not shown. Starting with the structure drawn below, complete the Lewis structure by adding all H atoms, valence electrons, and π bonds. This structure will have a –1 formal charge on the oxygen.The carbonate anion, CO32- , is a resonance hybrid. Draw all of the important resonance structures for this molecule. If an atom has a nonzero formal charge, be sure the formal charge is shown clearly in the structure. Use the resonance structures to calculate the average formal charge on each O atom (which are all equivalent in the "true" structure). [Note: all of the important contributing resonance structures have octets around each atom that desires an octet.]
- Determine the number of valence electrons in N₂H₂ and then draw the corresponding Lewis structure.Draw the best Lewis dot structure for HNO₃, be sure to give the electronic geometry, molecular geometry, bybridization of the central element, polarity, and bond angle around the central element.Determine the number of valence electrons in SO₃ and then draw the corresponding Lewis structure (with minimized formal charges).
- (b) The Murchison meteorite that landed in Australia in 1969 contained 92 different amino acids, including 21 found in Earth organism A skeleton structure (single bond only) of one of these extraterrestrial amino acids is shown below. Draw a Lewis structure, and identify any atoms having a nonzero formal charge. H3N. C ČH2 ČH3 (c) Draw the orbital diagrams and Lewis symbols to depict the formation of Na* and CI ions from the atoms. Give the formula of the compound formed. (d) The predicted bond length for HF is 109 pm (the sum of the covalent radii of H, 37 pm and F, 72 pm), however the actual bond length for HF is shorter (92 pm). It was observed that the difference between predicted and actual bond lengths becomes smaller going down the halogen group from HF to HI Describe these observationsWrite the Lewis structure for H3PO4. If necessary, expand the octet on any appropriate atoms to lower formal charge.Select the best Lewis structure for P2I4, predict the electron group arrangement of each central atom and the shape of this molecule.