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Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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<Homework 7 Formal Charges and Resonance Formal charge (FC) keeps track of which electrons an atom "owns" in a chemical bond with the equation valence e in valence e in FC = free atom bonded atom When more than one valid Lewis structure can be drawn for a particular molecule, formal charge is used to predict the most favorable structure. Figure 1 of 1 :NEC-
Transcribed Image Text:<Homework 7 Formal Charges and Resonance Formal charge (FC) keeps track of which electrons an atom "owns" in a chemical bond with the equation valence e in valence e in FC = free atom bonded atom When more than one valid Lewis structure can be drawn for a particular molecule, formal charge is used to predict the most favorable structure. Figure 1 of 1 :NEC-
9 of 10 Review Constants | Periodic Table A bonded atom is considered to "own" all its nonbonding electrons but only half of the bonding electrons because these are shared with another atom Therefore, the formal charge formula can be rewritten as follows: valence e in FC = nonbonding e bonding e free atom)-( shown shown Part A Due to the small and highly electronegative nature of fluorine, the oxyacids of the this element are much less common and less stable than those of the other halogens. Bonding theory, however, does allow one to propose structures for these acids and use formal charges for the evaluation of these structures. For a molecule of fluorous acid, the atoms are arranged as HOFO (Note In this oxyacid, the placement of fluorine is an exception to the rule of putting the more electronegative atom in a terminal position.) What is the formal charge on each of the atoms? Enter the formal charges in the same order as the atoms are listed. Express your answers as charges separated by comma. For example, a positive one charge would be written as +1. • View Available Hint(s) Formal Charge for H, O, F, O = Submit Previous Answers Part B Two possible electron-dot structures are shown for the cyanate ion, NCO B. (Figure 1) What can you conclude about how favorable the structures are? A O G E O ) 5:31 PM Master. Spotify. 82 F 11/14/2021 W Formal..
Transcribed Image Text:9 of 10 Review Constants | Periodic Table A bonded atom is considered to "own" all its nonbonding electrons but only half of the bonding electrons because these are shared with another atom Therefore, the formal charge formula can be rewritten as follows: valence e in FC = nonbonding e bonding e free atom)-( shown shown Part A Due to the small and highly electronegative nature of fluorine, the oxyacids of the this element are much less common and less stable than those of the other halogens. Bonding theory, however, does allow one to propose structures for these acids and use formal charges for the evaluation of these structures. For a molecule of fluorous acid, the atoms are arranged as HOFO (Note In this oxyacid, the placement of fluorine is an exception to the rule of putting the more electronegative atom in a terminal position.) What is the formal charge on each of the atoms? Enter the formal charges in the same order as the atoms are listed. Express your answers as charges separated by comma. For example, a positive one charge would be written as +1. • View Available Hint(s) Formal Charge for H, O, F, O = Submit Previous Answers Part B Two possible electron-dot structures are shown for the cyanate ion, NCO B. (Figure 1) What can you conclude about how favorable the structures are? A O G E O ) 5:31 PM Master. Spotify. 82 F 11/14/2021 W Formal..
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