Draw three resonance structures for CS,. This species has its three atoms bonded sequentially in the following fashion: S-C-S. Draw your resonance structures so that the atoms in them are bonded together in this order. Select the most important resonance structure for this species based on the formal charges on the atoms of the three resonance structures you have drawn. Select the choices from below which make the statements true about this (most important) resonance structure. (a) The leftmost bond (between S and C) is a single v bond. (b) The rightmost bond (between C and S) is a single v bond. (c) The formal charge on the leftmost (S) atom is -Select-v (d) The formal charge on the central (C) atom is -Select-v (e) The formal charge on the rightmost (S) atom is Select-v (f) The number of nonbonding pairs (lone pairs) of electrons in the leftmost (S) atom is -Select-v pairs. pairs. (g) The number of nonbonding (lone) pairs of electrons in the rightmost (S) atom is –Select-

Draw three resonance structures for CS,. This species has its three atoms bonded sequentially in the following fashion: S-C-S. Draw your resonance structures so that the atoms in them are bonded together in this order. Select the most important resonance structure for this species based on the formal charges on the atoms of the three resonance structures you have drawn. Select the choices from below which make the statements true about this (most important) resonance structure. (a) The leftmost bond (between S and C) is a single v bond. (b) The rightmost bond (between C and S) is a single v bond. (c) The formal charge on the leftmost (S) atom is -Select-v (d) The formal charge on the central (C) atom is -Select-v (e) The formal charge on the rightmost (S) atom is Select-v (f) The number of nonbonding pairs (lone pairs) of electrons in the leftmost (S) atom is -Select-v pairs. pairs. (g) The number of nonbonding (lone) pairs of electrons in the rightmost (S) atom is –Select-

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter3: Atomic Shells And Classical Models Of Chemical Bonding

Section: Chapter Questions

Problem 99AP: A stable triatomic molecule can be formed that contains one atom each of nitrogen, sulfur, and...

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the formal charges on all the atoms in the following Lewis diagrams. Which one would best represent bonding in the molecule Cl2O ?
A stable triatomic molecule can be formed that contains one atom each of nitrogen, sulfur, and fluorine. Three bonding structures are possible, depending on which is the central atom: NSF, SNF, and SFN. (a) Write a Lewis diagram for each of these molecules, indicating the formal charge on each atom. (b) Often, the structure with the least separation of formal charge is the most stable. Is this statement consistent with the observed structure for this molecule—namely, NSF, which has a central sulfur atom? (c) Does consideration of the electronegativities of N, S, and F from Figure 3.18 help rationalize this observed structure? Explain.
Which of these best descibe formal charge? Select all that apply. The difference between the number of electrons around an atom in the free state and the number of electrons assigned to the atom in the Lewis structure an atom in a chemical compound. O The formal charge of each atom is calculated by subtracting the number of valence electrons in the neutral atomfrom the number of electrons assigned to the atom. O Can be used to help determine the most reasonable distribution of electrons in a molecule or ion. O The charge that an atom in a molecule or ion would have if all atoms had the same electronegativity.
An incomplete Lewis structure is shown. The structure only shows the atom and how they are connected. The molecule has a bet charge of -1. Complete the Lewis structure giving all atoms full octets. If there is more than one way to do this, draw resonance structure showing all possibilities. If not, just draw one Lewis structure. Be sure to write in any non-Zero formal charges..
a) Below is a lewis structure of CSO. Draw two resonance structures of this molecule. Assign any formal charges if necessary. b) Now look at your structures. Do they represent equivalent or nonequivalent resonance structures of the original? Why or why not? c) Of all three structures, which contributes the most to the overall resonance hybrid and why? Rank the other two in terms of their contribution
Draw the Lewis structures for the following four molecules, being sure to show all steps following the methods covered in class. Structures without work shown will be marked incorrect. Also, one of these molecules has resonance structures – for this compound, make sure to include all resonance structures, indicate formal charges for each atom. SO2 OF2 IF3 NH4+ Consider a molecule where the central atom has one lone pair of electrons and is double-bonded to two other atoms (of a different element). Draw a general diagram of the molecule. Is this molecule likely a polar or nonpolar molecule? Briefly explain your reasoning, using words and the diagram.
Which 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: H
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.
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.
A classmate of yours is convinced that he knows everythingabout electronegativity. (a) In the case of atoms X and Y havingdifferent electronegativities, he says, the diatomic moleculeX¬Y must be polar. Is your classmate correct? (b) Yourclassmate says that the farther the two atoms are apart in abond, the larger the dipole moment will be. Is your classmatecorrect?
Although I3- is a known ion, F3- is not. (a) Draw the Lewis structure for I3- (it is linear, not a triangle). (b) One of your classmates says that F3 - does not exist because F is too electronegative to make bonds with another atom. Give an example that proves your classmate is wrong. (c) Another classmate says F3- does not exist because it would violate the octet rule.Is this classmate possibly correct? (d) Yet another classmatesays F3- does not exist because F is too small to make bonds tomore than one atom. Is this classmate possibly correct?
O Unit 3d - Polarity O Unit 3c - Molecular Geometry O Unit 3b - Lewis Structures O Unit 3a - Molecules s3.net/mod/quiz/attempt.php?attempt=31808328&cmid3D26593598&page=7 The following two Lewis structures may be drawn for a certain ion with a charge of -1. First, show the formal charge on each atom of each ion, then choose which structure is preferred. :C=N=ö: The formal charge on C is 2 + The formal charge on N is +1 + The formal charge on O is o + . EN-C=0: The formal charge on N is -2 : The formal charge on C is 0 : The formal charge on O is +1 : The preferred structure is the bottom + one.