Specify the number of unshared pairs of electrons necessary to complete the valence shell of the labeled atoms, a-c in the following structures. Specify "0" if no pair of electron needs to be added. Notice that formal charges are indicated by e or e and that the atoms are NOT labeled in sequence. ob H a 0 v b0 v c H. 1. a нн H. .C. 2. a H

Specify the number of unshared pairs of electrons necessary to complete the valence shell of the labeled atoms, a-c in the following structures. Specify "0" if no pair of electron needs to be added. Notice that formal charges are indicated by e or e and that the atoms are NOT labeled in sequence. ob H a 0 v b0 v c H. 1. a нн H. .C. 2. a H

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter2: Lewis Structures

Section: Chapter Questions

Problem 13CTQ: A complete Lewis structure must show all nonzero formal charges. Complete each of thefollowing Lewis...

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A complete Lewis structure must show all nonzero formal charges. Complete each of thefollowing Lewis structures by adding any missing formal charges.
Write Lewis structures for these ions. Show all valence electrons and all formal charges. (a) Amide ion, NH2 (b) Bicarbonate ion, HCO3 (c) Carbonate ion, CO32 (d) Nitrate ion, NO3 (e) Formate ion, HCOO (f) Acetate ion, CH3COO
Write all possible resonance structures for the following species. Assign a formal charge to each atom. In each case, which resonance structure is the most important? (a) NO2 (nitrogen is central) (b) ClCN
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.
4. The following are valid Lewis structures for CH3SOCH3. Label the formal charges and circle the best Lewis structure. H :ö: H H :0 H a) H-C=S-C-H b) Н—С—S— С-н H. H. H. H. Н :0: Н H :ö: H d) H-C=$-C-H c) Н—С—$—С-н H. H. H H
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
Assign formal charges to each carbon atom in the given species. All lone pairs have been drawn in. нн a. CH2=CH b. н-с-н с. Н-с-н d. H-Ć-Č нн H e. f. N=N=N: g h. or -N=Q:
2. Indicate the formal charge on each carbon atom in the examples below. All lone pairs are shown. H H HC- -H H—C—H H C H H H- H C -H H 3. Keeping in mind that all row two elements need to have 8 electrons and each bond contains two electrons, draw the missing lone pair electrons on each O or N below. Then, assign the missing formal charges to each O or N. +*+*
Draw three resonance structures for N3-. This species has its three atoms bonded sequentially in the following fashion: N-N-N. 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. Now select the statement from the multiple choices which is true about this most important resonance structure.In the most important resonance structure of N3- : a) The leftmost bond (between N and N) is a single bond. b) The rightmost bond (between N and N) is a single bond. c) The formal charge on the leftmost (N) atom is -1. d) The number of nonbonding pairs (lone pairs) of electrons on the leftmost (N) atom is 4. e) The number of nonbonding (lone) pairs of electrons on the rightmost (N) atom is 4.
Determine the formal charge for the atom indicated in the structures below. ASSUME that the structures are drawn correctly and that you do not have to change them due to formal charge issues. The external atom in this structure. H₂ _H ''H Ge A' Ī It 1. +1 2. +2 3. +3 4. 0 5. -3 6. -2 7. -1
Draw three resonance structures for N3-. This species has its three atoms bonded sequentially in the following fashion: N-N-N. 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. Now select the statement from the multiple choices which is true about this most important resonance structure.In the most important resonance structure of N3- : a) The leftmost bond (between N and N) is a single bond.b) The rightmost bond (between N and N) is a single bond.c) The formal charge on the leftmost (N) atom is -1.d) The number of nonbonding pairs (lone pairs) of electrons on the leftmost (N) atom is 4.e) The number of nonbonding (lone) pairs of electrons on the rightmost (N) atom is 4.
4. Which of the following structures have a formal charge on at least one atom? H. HN: H--0-H H-C-F: H-0B-o-H :o: II II IV H