Chemistry: Structure and Properties
1st Edition
ISBN: 9780321834683
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 6, Problem 18E
Explain the difference between electron geometry and molecular geometry. Under what circumstances are they not the same?
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The Lewis structure for SF6 is shown below. This sulfur S atom in this molecule has an expanded octet, and you are not expected to be familiar with the specific electron geometry and molecular geometry for expanded octets. Still, we can make some predictions with the knowledge that we have.
Would you predict the electron geometry and molecular geometry for SF6 to be the same or to differ? Please briefly explain your answer.
Use VSEPR theory to predict the geometry (including bond angles) about each interior atom of methyl azide (CH3N3), and make a sketch of the molecule. Would you expect the bond angle between the two interior nitrogen atoms to be the same or different? Would you expect the two nitrogen–nitrogen bond lengths to be the same or different?
Predict the electron-pair geometry and molecular structure of a water molecule.
Chapter 6 Solutions
Chemistry: Structure and Properties
Ch. 6 - Which set of elements is arranged in order of...Ch. 6 - Prob. 2SAQCh. 6 - Which pair of atoms forms the most polar bond? C...Ch. 6 - Which pair of atoms forms a nonpolar covalent...Ch. 6 - Prob. 5SAQCh. 6 - Prob. 6SAQCh. 6 - Prob. 7SAQCh. 6 - Prob. 8SAQCh. 6 - Prob. 9SAQCh. 6 - Prob. 10SAQ
Ch. 6 - Prob. 11SAQCh. 6 - Predict the relative bond angles in BF3 and SO2Ch. 6 - Predict the molecular geometry about N in the...Ch. 6 - Which molecule is polar?Ch. 6 - What is electronegativity? What are the periodic...Ch. 6 - Explain the difference between a pure covalent...Ch. 6 - What is meant by the percent ionic character of a...Ch. 6 - Prob. 4ECh. 6 - What is the magnitude of the dipole moment formed...Ch. 6 - What is the basic procedure for writing a covalent...Ch. 6 - How do you determine the number of electrons that...Ch. 6 - What are resonance structures? What is a resonance...Ch. 6 - Prob. 9ECh. 6 - Prob. 10ECh. 6 - Prob. 11ECh. 6 - Prob. 12ECh. 6 - What is bond energy?Ch. 6 - Give some examples of some typical bond lengths....Ch. 6 - Why is molecular geometry important? Cite some...Ch. 6 - According to VSEPR theory, what determines the...Ch. 6 - Name and draw the five basic electron geometries,...Ch. 6 - Explain the difference between electron geometry...Ch. 6 - List the correct electron and molecular geometries...Ch. 6 - How do you apply VSEPR theory to predict the shape...Ch. 6 - How do you determine if a molecule is polar?Ch. 6 - Why is polarity a key connection between the...Ch. 6 - Prob. 23ECh. 6 - Determine if a bond between each pair of atoms...Ch. 6 - Prob. 25ECh. 6 - Draw the Lewis structure for BrF with an arrow...Ch. 6 - Prob. 27ECh. 6 - Write the Lewis structure for each molecule. NF3...Ch. 6 - Prob. 29ECh. 6 - Write the Lewis structure for each molecule. CH2O...Ch. 6 - Prob. 31ECh. 6 - Prob. 32ECh. 6 - Write the Lewis structure for each molecule or ion...Ch. 6 - Prob. 34ECh. 6 - Write a Lewis structure that obeys the octet rule...Ch. 6 - Prob. 36ECh. 6 - Use formal charge to determine which Lewis...Ch. 6 - Prob. 38ECh. 6 - How important is this resonance structure to the...Ch. 6 - Prob. 40ECh. 6 - Prob. 41ECh. 6 - Prob. 42ECh. 6 - Determine the formal charges of the atoms shown in...Ch. 6 - Prob. 44ECh. 6 - Prob. 45ECh. 6 - Write the Lewis structure for each molecule (octet...Ch. 6 - Prob. 47ECh. 6 - Write Lewis structures for each molecule or ion....Ch. 6 - Prob. 49ECh. 6 - Write Lewis structures for each molecule or ion....Ch. 6 - List these compounds in order of increasing...Ch. 6 - Which of these compounds has the stronger...Ch. 6 - A molecule with the formula AB3 has a trigonal...Ch. 6 - A molecule with the formula AB3 has a trigonal...Ch. 6 - For each molecular geometry shown here, list the...Ch. 6 - For each molecular geometry shown here, list the...Ch. 6 - Determine the electron geometry, molecular...Ch. 6 - Determine the electron geometry, molecular...Ch. 6 - Which species has the smaller bond angle, H3O+ or...Ch. 6 - Which species has the smaller bond angle; C1O4- or...Ch. 6 - Determine the molecular geometry and draw each...Ch. 6 - Determine the molecular geometry and draw each...Ch. 6 - Determine the molecular geometry about each...Ch. 6 - Prob. 64ECh. 6 - Prob. 65ECh. 6 - Prob. 66ECh. 6 - Prob. 67ECh. 6 - Determine the geometry about each interior atom in...Ch. 6 - Explain why CO2 and CCl4 are both nonpolar even...Ch. 6 - CH3F is a polar molecule, even though the...Ch. 6 - Determine whether each molecule in Exercise 57 is...Ch. 6 - Prob. 72ECh. 6 - Determine whether each molecule or ion is polar or...Ch. 6 - Determine whether each molecule is polar or...Ch. 6 - Each compound contains both ionic and covalent...Ch. 6 - Prob. 76ECh. 6 - Carbon ring structures are common in organic...Ch. 6 - Prob. 78ECh. 6 - Prob. 79ECh. 6 - Diazomethane is a highly poisonous, explosive...Ch. 6 - Prob. 81ECh. 6 - Phosgene (Cl2CO) is a poisonous gas that was used...Ch. 6 - The cyanate ion (OCN-) and the fulminate ion...Ch. 6 - Prob. 84ECh. 6 - Prob. 85ECh. 6 - Prob. 86ECh. 6 - Prob. 87ECh. 6 - Prob. 88ECh. 6 - Prob. 89ECh. 6 - Free radicals are important in many...Ch. 6 - A compound composed of only carbon and hydrogen is...Ch. 6 - A compound composed of only carbon and chlorine is...Ch. 6 - Prob. 93ECh. 6 - The genetic code is based on four different bases...Ch. 6 - Prob. 95ECh. 6 - Prob. 96ECh. 6 - Prob. 97ECh. 6 - A 0.167-g sample of an unknown compound contains...Ch. 6 - Use the dipole moments of HF and HCI (given at the...Ch. 6 - One form of phosphorus exists as P4 molecules....Ch. 6 - A compound has the formula C8H8 and does not...Ch. 6 - Prob. 102ECh. 6 - The bond angles increase steadily in the series...Ch. 6 - Draw the Lewis structure for acetamide (CH3CONH2),...Ch. 6 - Prob. 105ECh. 6 - In the very first chapter of this book, we...Ch. 6 - Which statement best captures the fundamental idea...Ch. 6 - Prob. 108E
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- What aspect of the following Lewis structure indicates that the concept of coordinate covalency is needed to explain the bonding in the molecule?arrow_forwardIn each of the following molecules, a central atom is surrounded by a total of three atoms or unshared electron pairs: SnCl2, BCl3, SO2. In which of these molecules would you expect the bond angle to be less than 120? Explain your reasoning.arrow_forwardConsider the following molecules: SiH4, PH3, H2S. In each case, a central atom is surrounded by four electron pairs. In which of these molecules would you expect the bond angle to be less than 109.5? Explain your reasoning.arrow_forward
- 10. Each ball-and-stick model below shows the electron-pair and molecular geometry of a generic molecule. Explain what is wrong with each molecular geometry and provide the correct molecular geometry based on the number of lone and bonding pairs around the central atom. (a) (b) (c) 11. Draw the Lewis structure for acetamide (CH3CONH2) and determine the geometry about each interior atom. Experiments show that the geometry about the N atom in acetamide is nearly planar. Draw a resonance structure that can account for the planar geometry about the N atom.arrow_forwardDetermine the electron geometry, molecular geometry, and idealized bond angles for each of the following molecules. CF4 NF3 OF2 H2S In which cases do you expect deviations from the idealized bond angle?arrow_forwardWrite the Lewis structure for the diatomic molecule P2, an unstable form of phosphorus found in hightemperature phosphorus vapor.arrow_forward
- Use VSEPR to predict the geometry (including bond angles) about each interior atom of methyl azide (CH3N3) and draw the molecule. Would you expect the bond angle between the two interior nitrogen atoms to be the same or different? Would you expect the two nitrogen–nitrogen bond lengths to be the same or different?arrow_forwardThe VSEPR formula, AXnEm, helps us to predict the molecular shape. What does each symbol represent in the formula? The VSEPR model extends Lewis’s theory to account for molecular shapes. Write the rules of the VSEPR model that account for molecular shapes and bond angles:arrow_forwardWhat is Valence Bond Theory? How does it differ from the Lewis concept of chemical bonding?arrow_forward
- Which of the following statements is/are true about the Lewis bond theory? (a) It explains the stability of the molecule. (b) It explains why one covalent bond might differ from another. (c) It ignores the energy changes in chemical bond formation. (d) It treats all covalent bond in the same manner. a and b O b and c O c and d a and darrow_forwardWhat effect does the presence of lone-pair electrons have on the bond angles in a molecule?arrow_forwardWhats the difference between sigma and pi bonds?arrow_forward
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