Consider the Lewis structure for F2CO (carbon is the central atom in this structure). Which of the following statements about this Lewis structure is incorrect? Q4: Level 4 (T4, L.G. 6) Unanswered Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a The central atom contains no lone pairs of electrons b The structure contains 2 double bonds and 1 single bond C d The structure contains 2 single bonds and 1 double bond The oxygen atom contains 2 lone pairs of electrons

Consider the Lewis structure for F2CO (carbon is the central atom in this structure). Which of the following statements about this Lewis structure is incorrect? Q4: Level 4 (T4, L.G. 6) Unanswered Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a The central atom contains no lone pairs of electrons b The structure contains 2 double bonds and 1 single bond C d The structure contains 2 single bonds and 1 double bond The oxygen atom contains 2 lone pairs of electrons

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter7: Covalent Bonding

Section: Chapter Questions

Problem 68QAP: Consider the pyrosulfate ion, S2O72-. It has no sulfurâ€“sulfur nor oxygenâ€“oxygen bonds. (a) Write...

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A student draws the picture of ammonia (NH3) in the box below, left, and predicts it will be a flatmolecule with HNH bond angles of exactly 120°. Unfortunately, the student left something out. a. What did the student omit from his drawing? b. What is the actual HNH bond angle of ammonia (based on the draw g above, right)? c. Explain why water, ammonia, and methane (shown below) all have about the same bondangles (close to 109.5°) even though they have different numbers of bonds.
Consider the pyrosulfate ion, S2O72-. It has no sulfurâ€“sulfur nor oxygenâ€“oxygen bonds. (a) Write a Lewis structure for the pyrosulfate ion using only single bonds. (b) What is the formal charge on the sulfur atoms for the Lewis structure you drew in part (a)? (c) Write another Lewis structure using six bonds and two Oâ€”S bonds. (d) What is the formal charge on each atom for the structure you drew in part (c)?
The molecular ion S3N3 has the cyclic structure All SN bonds are equivalent. (a) Give six equivalent resonance hybrid Lewis diagrams for this molecular ion. (b) Compute the formal charges on all atoms in the molecular ion in each of the six Lewis diagrams. (c) Determine the charge on each atom in the polyatomic ion, assuming that the true distribution of electrons is the average of the six Lewis diagrams arrived at in parts (a) and (b). (d) An advanced calculation suggests that the actual charge resident on each N atom is 0.375 and on each S atom is +0.041 . Show that this result is consistent with the overall +1 charge on the molecular ion.
The study of carbon-containing compounds and their properties is called organic chemistry. Besides carbon atoms, organic compounds also can contain hydrogen, oxygen, and nitrogen atoms (as well as other types of atoms). A common trait of simple organic compounds is to have Lewis structures where all atoms have a formal charge of zero. Consider the following incomplete Lewis structure for an organic compound called histidine (an amino acid), which is one of the building blocks of proteins found in our bodies: Draw a complete Lewis structure for histidine in which all atoms have a formal charge of zero.
Aspartame is an artificial sweetener marketed under the name Nutra-Sweet. A partial Lewis structure for aspartame is shown below. Aspartame can be classified as an organic compound (a compound based on carbon atoms). The majority of Lewis structures for simple organic compounds have all atoms with a formal charge of zero. Therefore, add lone pairs and multiple bonds to the structure above to give each atom a formal charge of zero when drawing the Lewis structure. Also note that the six-sided ring is shorthand notation for a benzene ring (C6H5). Benzene is discussed in Section 4-7. Complete the Lewis structure for aspartame. How many C and N atoms exhibit sp1 hybridization? How many C and O atoms exhibit sp3 hybridization? How many and bonds are in aspartame?
A common trait of simple organic compounds is to have Lewis structures where all atoms have a formal charge of zero. Consider the following incomplete Lewis structure for an organic compound called methyl cyanoacrylate, the main ingredient in Super Glue. Draw a complete Lewis structure for methyl cyanoacrylate in which all atoms have a formal charge of zero.
A paper published in the research Journal Science in 2007 (S. Vallina and R. Simo, Science, Vol. 315, p. 506, January 26, 2007) reported studies of dimethylsulfide (DMS), an important green-house gas that is released by marine phytoplankton. This gas represents the largest natural source of atmospheric sulfur and a major precursor of hygroscopic (i.e., cloud-forming) particles in clean air over the remote oceans, thereby acting to reduce the amount of solar radiation that crosses the atmosphere and is absorbed by the ocean. (a) Sketch the Lewis structure of dimethylsulfide, CH3SCH3, and list the bond angles in the molecule. (b) Use electronegativities to decide where the positive and negative charges lie in the molecule. Is the molecule polar? (c) The mean seawater concentration of DMS in the ocean in the region between 15 north latitude and 15 south latitude is 2.7 nM (nanomolar). How many molecules of DMS are present in 1.0 m3 of seawater?
Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. substance A B C D chemical symbol, chemical formula or Lewis structure .. 0=N-C1: : Cl : : Cl: CaCl₂2 .. Cl₂ C=C : Cl: : Cl: boiling point (Choose one) (Choose one) v (Choose one) ✓ (Choose one) ✓ X 5
✔nk the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest Bolling puint, choose 2 next to the substance with the next highest boiling point, and so on. substance A B C D chemical symbol, chemical formula or Lewis structure H H-C-F: H :O: | || HIC-C-F: 1 H H H H :O: | || HIC-C-0-H F₂ boiling point ✓ (Choose one) 1 (highest) 2 34 4 (lowest) (Choose one) ✓ (Choose one) ✓ (Choose one) ✓
Your answer is incorrect. Decide whether the Lewis structure proposed for each molecule is reasonable or not. • Row 1: Your answer is incorrect. ● Row 2: Your answer is incorrect. molecule proposed Lewis structure CO₂ IBr, SF 3 +TE. .. :0 C 0: Br F — S — :F: Br :E: Is this a reasonable structure? If not, why not? Yes, it's a reasonable structure. No, the total number of valence electrons is wrong. The correct number is: O No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: O Yes, it's a reasonable structure. No, the total number of valence electrons is wrong. The correct number is: No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: 0 Yes, it's a reasonable structure. No, the total number of valence electrons is wrong. The correct number is: No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: F
Examples: Example: H▬N▬H HIN: Examples: :F Н lone pair : -bond pair (2 e-) single bond :F: Non-Polar 8+. H :F: H:Cl: HCl:o is better represented as closer to Cl due to its greater electronegativity. Thus, HCl contains a polar covalent bond. H :0: Polar lone pair 8- :S H -S= :0: 2 bond pairs (4 e-) double bond because the bond electrons are pulled F: Pola
tR-XZxj_1SoekWMaP1As1fEhnC179H4SICzl1mdWKpKlvbF3amiKazP. OF ORGANIC MOLECULES Drawing a Lewis structure for a simple organic molecule from a. GE OOD D Draw a Lewis structure of the molecule that matches the description below. All non-H atoms should have full octets, and all formal charges should be zero. Unless you're told otherwise, assume there are no rings in the molecule. Description: The molecule is composed of 10, 4H's, and 2C's and it contains a C-C single bond. Click and drag to start drawing a structure. 2021 McGraw-Hill Education All Rights Reseved Terms of Uhe Pcy Check Explanation