Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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a.)Draw a Lewis diagram for IO4- in which the central I atom has a formal charge of zero and show all NONZERO formal charges on all atoms. note overall charge of ion is -1
b.)Draw a Lewis structure for IO4- in which the octet rule is satisfied on all atoms and show all NONZERO formal charges on all atoms. C.Based on formal charge, what is the best Lewis structure for the ion? smallest formal charge or octet rule satisfied for all atoms
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- The structure at the right is a skeleton of an anion having the overall formula C6H,NO¯. The hydrogen atoms are not shown. (a) Draw a complete Lewis structure in which the -1 formal charge is on N. Include all H atoms and C. valence electrons. (b) Do the same for a Lewis structure with the -1 formal charge on O. (c) Do the same for a Lewis structure with the -1 formal charge on the C atom that is bonded to three other C atoms.arrow_forwardTo answer the questions, interpret the following Lewis structure for SO42-. For the central sulfur atom: ... The number of lone pairs = The number of single bonds = The number of double bonds = The central sulfur atom: obeys octet rules or expanded octet rules or has incomplete octet rules? 2) To answer the questions, interpret the following Lewis diagram for CO2 .For the central carbon atom: ... The number of lone pairs = The number of single bonds = The number of double bonds = The central carbon atom: obeys octet rules or expanded octet rules or has incomplete octet rules? 3) To answer the questions, interpret the following Lewis structure for BCl3. For the central boron atom: ... The number of lone pairs = The number of single bonds = The number of double bonds = the central boron atom: obeys octet rules or expanded octet rules or has incomplete octet rules?arrow_forwardDraw in any lone pairs that are missing on the oxygen/nitrogen atoms and determine if there is a formal charge on those atoms.arrow_forward
- Using molecular models, construct the following molecules/polyatomic ions, and write their Lewis formulas. Record the following information for each in your laboratory notebook. a) Molecule or ionb) # of valence electronsc) Lewis structured) Draw any resonance structures if applicablee) Calculate all formal charges for molecules that have resonance structuresf) For molecules that have resonance structures identify, which resonance structure contributes the most to the hybrid? 1.PH3 2 HCN 3.PO4 3-arrow_forward1. Consider the structure shown below and then answer the following questions. a. Complete the structure by adding the missing formal charges. All atoms and lone pairs are explicitly shown. (Hint: Consider the number of bonds neutral atoms have.) :Ö: H ‚H H H b. Draw two more resonance structures of the molecule from part a by adding the missing î bonds, lone pairs, and formal charges. All atoms in both structures should possess an octet. (All atoms and o bonds are drawn for you; remember, only lone pairs and bonds move in resonance structures.) Additional guidelines are given for each structure. All atoms in this structure will be neutral (no formal charges). One oxygen atom has a +1 formal charge and one oxygen atom has a -1 formal charge. H H H H H H H H Harrow_forwardAdd formal charges to CH,. Note the presence of the lone pair. Add formal charges to CH,. Select Draw Rings More Erase Select Draw Rings More Erase H. // C H. -:- H. H C H. Which atoms have a complete octet? Add a lone pair to NH,. Add a formal charge, MacBook Pro ofarrow_forward
- Two major resonance structures are possible for the anion shown. One resonance form is given, but it is incomplete. Complete the given structure by adding nonbonding electrons and formal charges. Draw the remaining structure, including nonbonding electrons and formal charges. Omit curved arrows. Structure A: complete the structure by adding nonbonding electrons and formal charges. H H H I Structure B: draw the remaining resonance structure, including nonbonding electrons and formal charges. H- : z: H Harrow_forwarda. 01: Provide the formal charges for each atom in the molecule below, and answer the additional question (hint: none of the violate the octet rule). Format your answer as +2 or -3, for example. If there is no formal charge, then enter a zero (0). :0:4 b. 04: c. 05: H H d. Does this molecule have an overall charge (yes or no)? CH 3 21= CH3 Ö: hparrow_forwardThe formal charge on N-1 is [Select] The formal charge on N-2 is [Select] The formal charge on N-3 is [Select] The overall charge on the azide ion is [Select] Aarrow_forward
- POST-LABORATORY QUESTIONS Due after Laboratory Experiment 1. Thiocyanate, SCN, has three possible structures a. Draw the resonance structures of thiocyanate, SCN- b. Assign the formal charge of each atom in each of the three resonance structures. On the basis of the formal charges and the electronegativities, identify the major resonance structure. с. Duour tho LOuris dot structure for each of the following molecules or ions. Determinearrow_forwardUnshared, or lone, electron pairs play an important role in determining the chemical and physical properties of organic compounds. Thus, it is important to know which atoms carry unshared pairs. Use the structural formulas below to determine the number of unshared pairs at each designated atom. Be sure your answers are consistent with the formal charges on the formulas. b. H3C- -N+ H₂C-C- H H The number of unshared pairs at atom a is The number of unshared pairs at atom b is The number of unshared pairs at atom c is b -O-CH3 The number of unshared pairs at atom a is The number of unshared pairs at atom b is The number of unshared pairs at atom c isarrow_forwardand electronegativity can help us choose the structure that is the best representation. 1. Assign formal charges to the elements in each of the structures below. Note: Count oxygen atoms starting from the left for each structure. astered -- -- ——... Formal Charge S 01 02 03 A .0% 2- 2. The best Lewis structure for SO3²- is S :0: B :0: ....———— Carrow_forward
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