Concept explainers
Interpretation: The description of pi bonds should be matched for arrow 1, 2, and 3.
Concept introduction: Lewis structure is a representation of molecules in which dots are shown to represent unshared electrons and lines are shown to represent bonds. These lines and dots represent distribution of electrons in the molecule.
When one single structure is unable to describe all the properties of a single-molecule, a phenomenon called resonance comes into play. This arises when two or more than two Lewis structures are possible for one molecule. All such structures are called resonating structures and have same placement of atoms in them but these have different locations of bond pairs and lone pairs. The resonating structures are inter-convertible with each other. The resultant of all the resonating or contributing structures is called the resonance hybrid.
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Organic Chemistry: A Guided Inquiry
- Clear 0 - s - O | A Lewis structure of SO2 is shown. - so, has one other resonance structure that does not violate the octet rule. A partically completed resonance structure of this molecule is shown. Complete the other resonance structure by dragging bonds and lone electron pairs to their appropriate positions. When complete, click Check.arrow_forwardIn the following compound, identify all carbon atoms that you expect will be different in electron density. Drag the appropriate partial charges to these carbon atoms. S+ ..arrow_forwardGive typed full explanation Look at figure 3-22 that shows the electron density that occurs abound the Si-O bond. This electron density map gives the "shape" of the O and Si atoms when they are bonded together. Think about the answer in Q9 and choose the best response below: (Select answer choice) a. This figure shows that the Si and O atoms, when they bond together, do not form spheres, which is due to the fact that the Si-O bond is strongly covalent and these shared electrons affect atomic shape. This change in shape limits the applicability of Pauling's Coordination principle since that principle is based on the geometry of perfect spheres. b. This figure shows that the Si and O atoms, when they bond together are close to perfect spheres, which is due to the fact that the Si-O bond is strongly covalent. This figure shows that Pauling's Coordination principle should apply very precisely to any substance that contains Si-O bonds c. This figure shows that the Si and O atoms, form in a…arrow_forward
- Draw the resonance structure indicated by the curved arrows. Assign formal charges. H H/:O: H H-C-C-C-Ċ—H H H H Draw the molecule by placing atoms on the canvas and connecting them with bonds. Include all hydrogen atoms and nonbonding electrons. Show the formal charges of all atoms in the correct structure.arrow_forwardDirections: Complete the data table below. It is not necessary to construct any models. Number of bonds & number of lone pairs around central atom Chemical Valence electrons name Formula Lewis structure NCI, N-5 3 bonds Nitrogen CI- 7(3) 20 lone pairs trichloride Si-4 S-6(2) Sis, Silicon disulfide Н-1 C- 4 HCN N-5 C-4 CF,CI, F-7(2) CI-7(2) Ge-4 Germane GeH, H-1(4) C-4 CSF, S-6 F-7(2) Selenium Se-6 dichloride SeCl, CI-7(2) AsF, As-5 F-7(3) arsenic trifluoride C-4(2) Br-7(2) Dibromoacetylene chlorine gas Cl: CI-7(2) dihydrogen monoxide DHMO CH,O C-4 H-1(2) O-6 carbon CF, C-4 tetrafluoride F-7(4)arrow_forwardWhich of the following Lewis dot structures is a valid Lewis structure? H +YF H H-P None of these : Si= CI are H- H. plausible/valid. H. :F: Harrow_forward
- An incorrect Lewis structure of nitromethane is shown below. Identify the problem with this structure. II -I H :O: || N :O: A) There are too many electrons in this structure. B) There are not enough electrons in this structure. C) An atom smaller than neon is exceeding octet rule. D) Double bonds or triple bonds would decrease the charge separation and provide octets for all atoms. E) Formal charges are incorrect.arrow_forwardructions tiple Attempts Not allowed. This test can only be taken once. ce Completion This test can be saved and resumed later. Your answers are saved automatically. Jestion Completion Status: 1 2 3 4 QUESTION 1 Enter the number of valence electrons and number of possible bonds for each of the following element CARBON: Valence electrons: 4 ; Bonds needed: 4 OXYGEN: Valence electrons: 6 ; Bonds needed: 2 HYDROGEN: Valence electrons: 1 NITROGEN: Valence electrons: 5 SULFUR: Valence electrons: PHOSPHORUS: Valence electrons: CHLORINE: Valence electrons: FLUORINE: Valence electrons: I For Blank 9 ; Bonds needed: 1 ; Bonds needed: 3 ; Bonds needed: ; Bonds needed: ; Bonds needed: ; Bonds needed: Click Save and Submit to save and submit. Click Save All Answers to suve all answers,arrow_forwardWhat is delocalization energy? How is it related to resonance energy? Answer by selecting all true statements. 00 Resonance energy is a term used in VB theory. Resonance energy and delocalization energy are term that describe different conditions. Resonance energy is a term used in MO theory. Resonance energy and delocalization energy are essentially the same thing. Resonance energy and delocalization energy represent the additional stability associated with a spreading out of electron density. Delocalization energy is a term used in VB theory. Delocalization energy is a term used in MO theory. Resonance energy and delocalization energy represent the additional stability associated with concentrating electron density.arrow_forward
- A resonance hybrid is a structure that can be depicted by more than one valid Lewis structure. part1: Draw the major resonance form of fulminic acid, HCNO, with the atoms connected as indicated in the formula. Your structure should have nonzero formal charges minimized, and it should include all nonzero formal charges and all nonbonding electrons. part2: Draw the second most important resonance form of fulminic acid, HCNO, with the atoms connected as indicated in the formula. Your structure should have nonzero formal charges minimized, and it should include all nonzero formal charges and all nonbonding electrons. part3: Draw the least important resonance contributor for fulminic acid, HCNO, with the atoms connected as indicated in the formula. Your structure should have nonzero formal charges minimized and should include all nonzero formal charges and all nonbonding electrons.arrow_forwardA resonance hybrid is a structure that can be depicted by more than one valid Lewis structure. part1: Draw the major resonance form of fulminic acid, HCNO, with the atoms connected as indicated in the formula. Your structure should have nonzero formal charges minimized, and it should include all nonzero formal charges and all nonbonding electrons. part2: Draw the second most important resonance form of fulminic acid, HCNO, with the atoms connected as indicated in the formula. Your structure should have nonzero formal charges minimized, and it should include all nonzero formal charges and all nonbonding electrons.arrow_forward(Incorrect) Which of the following compounds displays the greatest ionic character in its bonds? CO₂ (Your answer) HF (Correct answer) H₂O NH3 NO₂arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning