General Chemistry: Principles and Modern Applications (11th Edition)
11th Edition
ISBN: 9780132931281
Author: Ralph H. Petrucci, F. Geoffrey Herring, Jeffry D. Madura, Carey Bissonnette
Publisher: PEARSON
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Textbook Question
Chapter 11, Problem 2E
Explain why it is necessary to hybridize atomic orbitals when applying the valence bond method-that is, why are there so few molecules that can be described by the overlap of pure atomic orbitals only?
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2) a) Consider the following molecule . Given what you have learned about hybridization theory, draw an image or images explaining the bonding situation in this molecule. I want you to draw out all of the orbitals, hybrid orbitals and how they overlap to form the bonds in the molecule. Indicate the % s or p character in the given atomic and hybrid orbitals. Which C-C bond or bonds are the longest? In a paragraph or so explain the image or images you just drew.
b) Lastly, consider the molecule below. Indicate the Molecular formula, the molar mass, label the hybridization of each atom except for hydrogen, indicate any chiral centers with a *, which bond or bonds are the shortest, identify by name of each functional group with an arrow pointing to the group.
Which one of the following statements is false?
Valence bond theory and molecular orbital theory can be described as two different views of the same thing.
When one considers the molecular orbitals resulting from the overlap of any two specific atomic orbitals, the bonding orbitals are always lower in energy than the antibonding orbitals.
Molecular orbitals are generally described as being more delocalized than hybridized atomic orbitals.
One of the shortcomings of molecular orbital theory is its inability to account for a triple bond in the nitrogen molecule, N2.
One of the shortcomings of valence bond theory is its inability to account for the paramagnetism of the oxygen molecule, O2.
Based on molecular orbital theory, is it correct to say that when a diatomic molecule loses an electron, the bond energy always decreases (that is, that the bond is always weakened)? Explain and provide examples to prove your case.
Chapter 11 Solutions
General Chemistry: Principles and Modern Applications (11th Edition)
Ch. 11 - Prob. 1ECh. 11 - Explain why it is necessary to hybridize atomic...Ch. 11 - Describe the molecular geometry of H2O suggested...Ch. 11 - Describe the molecular geometry of NH2 suggested...Ch. 11 - In which of the following, CO32-,SO2,CCl4,CO,NO3-...Ch. 11 - In the manner of Example 11-1, describe the...Ch. 11 - For each of the following species, identify the...Ch. 11 - Propose a plausible Lewis structure, geometric...Ch. 11 - Describe a hybridization scheme for the central Cl...Ch. 11 - Describe a hybridization scheme for the central S...
Ch. 11 - Match each of the following species with one of...Ch. 11 - Propose a hybridization scheme to account for...Ch. 11 - Indicate which of the following molecules and ions...Ch. 11 - In the manner of Figure 11-18, indicate the...Ch. 11 - Write Lewis structures for the following...Ch. 11 - Represent bonding in the carbon dioxide molecule,...Ch. 11 - Use the method of Figure 11-19 to represent...Ch. 11 - Use the method of Figure 11-19 to represent...Ch. 11 - The molecular model below represents citric acid,...Ch. 11 - Malic is e common organic acid found in unripe...Ch. 11 - Shown below are ball-and-stick models. Describe...Ch. 11 - Shown below are ban-and-stick models. Describe...Ch. 11 - Prob. 23ECh. 11 - The structure of the molecule allene, CH2CCH2 , is...Ch. 11 - Angelic acid, shown below, occurs in symbol root,...Ch. 11 - Dimethylolpropionic acid, shown below, is used in...Ch. 11 - Explain the essential difference in how the...Ch. 11 - Describe the bond order of diatomic carbon, C2 ,...Ch. 11 - Prob. 29ECh. 11 - The paramagnetism of gaseous B2 has been...Ch. 11 - Prob. 31ECh. 11 - Is it correct to say that when a diatomic molecule...Ch. 11 - For the following pairs of molecular orbitals,...Ch. 11 - For each of the species C2+,O2,F2+ , and NO+ ; a....Ch. 11 - Write plausible molecular orbital occupancy...Ch. 11 - We have used the term “isoelectronic” to refer to...Ch. 11 - Consider the molecules NO+ and N2+ and use...Ch. 11 - Consider the molecules CO+ and CN- and use...Ch. 11 - Construct the molecular orbital diagram for CF....Ch. 11 - Construct the molecular orbital diagram for SrCl....Ch. 11 - Explain why the concept of delocalized molecular...Ch. 11 - Explain how it is possible to avoid the concept of...Ch. 11 - In which of the following molecules would you...Ch. 11 - In which of the following ions would you expect to...Ch. 11 - The Lewis structure of N2 indicates that the...Ch. 11 - Show that both the valence bond method and...Ch. 11 - A group of spectroscopists believe that they have...Ch. 11 - Lewis theory is satisfactory to explain bonding in...Ch. 11 - The compound potassium sesquoxide has the...Ch. 11 - Draw a Lewis structure for the urea molecule, CO(...Ch. 11 - Methyl nitrate, CH2NO2 , is used as a rocket...Ch. 11 - Fluorine nitrate, FONO2 , is an oxidizing agent...Ch. 11 - Draw a Lewis structure(s) for the nitrite ion, NO2...Ch. 11 - Think of the reaction shown here as involving the...Ch. 11 - Prob. 55IAECh. 11 - Prob. 56IAECh. 11 - The molecule formamide, HCONH2 , has the...Ch. 11 - Pyridine, C2H2N , is used in the synthesis of...Ch. 11 - Prob. 59IAECh. 11 - The ion F2Cl is linear, but the ion F2Cl+ is bent....Ch. 11 - Prob. 61IAECh. 11 - Prob. 62IAECh. 11 - Prob. 63IAECh. 11 - Prob. 64IAECh. 11 - Histidine, an essential amino acid, serves as a...Ch. 11 - The anion I42 is linear, and the anion I5 is...Ch. 11 - Prob. 67IAECh. 11 - A conjugated hydrocarbon has an alternation of...Ch. 11 - An elusive intermediate of atmospheric reactions...Ch. 11 - Resonance energy is the difference in energy...Ch. 11 - Furan, C4H4O , is a substance derivable from oat...Ch. 11 - As discussed in Are You Wondering 11-1, the sp...Ch. 11 - In Chapter 10, we saw that electronegativity...Ch. 11 - Borazine, B2N2H2 is often referred to as inorganic...Ch. 11 - Which of the following combinations of orbitals...Ch. 11 - Prob. 76FPCh. 11 - Prob. 77SAECh. 11 - Prob. 78SAECh. 11 - Explain the important distinctions between the...Ch. 11 - A molecule in which sp2 hybrid orbitals are used...Ch. 11 - Prob. 81SAECh. 11 - The hybridization scheme for the central atom...Ch. 11 - Of the following, the species with a bond order of...Ch. 11 - The hybridization scheme for Xe in XeF2 is (a) sp;...Ch. 11 - Delocalized molecular orbitals are found in (a)...Ch. 11 - Prob. 86SAECh. 11 - Why does the hybridization sp2d not account for...Ch. 11 - What is the total number of (a) bonds and (b) p...Ch. 11 - Which of the following species are paramagnetic?...Ch. 11 - Use the valence molecular orbital configuration to...Ch. 11 - Use the valence molecular orbital configuration to...Ch. 11 - Which of these diatomic molecules do you think has...Ch. 11 - For each of the following ions or molecules,...Ch. 11 - Draw Lewis structures for the NO2 and NO2+ ions,...Ch. 11 - In which of the following is the central atom sp...Ch. 11 - Prob. 96SAECh. 11 - According to molecular orbital theory, the O22 ion...Ch. 11 - What is the angle between the hybrid orbitals...Ch. 11 - Consider the molecule with the Lewis structure...Ch. 11 - Construct a concept map that embodies the ideas of...Ch. 11 - Prob. 101SAECh. 11 - Construct a concept map that describes the...
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- In propene CH3CH=CH2, the first carbon has sp3 hybrid orbitals and the second carbon has sp2 hybrid orbitals. These orbitals interact to make a bond. Why are these hybrid orbitals not orthogonal?arrow_forwardPiperine, the active ingredient in black pepper, has this Lewis structure. (a) Give the values for the indicated bond angles. (b) What is the hybridization of the nitrogen? (c) What is the hybridization of the oxygens?arrow_forwardBased on the discussion so far, identify a characteristic that is common to all situations where electron-region geometry and molecular geometry are the same for a molecule or a polyatomic ion.arrow_forward
- Use MO theory to predict the bond order and the number of unpaired electrons in the super-oxide ion, , and the peroxide ion, .arrow_forwardMethylcyanoacrylate is the active ingredient in super glues. Its Lewis structure is (a) How many sigma bonds are in the molecule? (b) How many pi bonds are in the molecule? (c) What is the hybridization of the carbon atom bonded to nitrogen? (d) What is the hybridization of the carbon atom bonded to oxygen? (e) What is the hybridization of the double-bonded oxygen?arrow_forwardAspartame is a compound that is 200 times sweeter than sugar and is used extensively (under the trade name NutraSweet) in diet soft drinks. The skeleton structure of the atoms in aspartame is (a) Complete the Lewis structure and give the number of and bonds in aspartame. (b) What is the hybridization about each carbon atom that forms a double bond with an oxygen atom? (c) What is the hybridization about each nitrogen atom?arrow_forward
- Considering only the molecular orbitals formed by combinations of the 2s atomic orbitals, how many molecular orbitals can be formed by 1000 Li atoms? In the lowest energy state, how many of these orbitals will be populated by pairs of electrons and how many will be empty?arrow_forwardThere are two compounds with the molecular formula HN3. One is called hydrogen azide; the other is cyclotriazene. (a) Write the Lewis structure for each compound. (b) Designate the hybridization of each nitrogen in hydrogen azide. (c) What is the hybridization of each nitrogen in cyclotriazene? (d) How many sigma bonds are in hydrogen azide? In cyclotriazene? (e) How many pi bonds are in hydrogen azide? In cyclotriazene? (f) Give approximate values for the N-to-N-to-N bond angles in each molecule.arrow_forwardAspirin, or acetylsalicylic acid, has the formula C9H8O4 and the skeleton structure (a) Complete the Lewis structure and give the number of bonds and bonds in aspirin. (b) What is the hybridization about the CO2H carbon atom (colored blue)? (c) What is the hybridization about the carbon atom in the benzene-like ring that is bonded to an oxygen atom (colored red)? Also, what is the hybridization of the oxygen atom bonded to this carbon atom?arrow_forward
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