1) A) In the Lewis structure for IF2–, how many lone pairs of electrons are around the central iodine atom? a) 0 b) 1 c) 2 d) 3 e) 4 B) The Cl–Xe–Cl bond angle in XeCl4 is closest to a) 90° b) 120° c) 150° d) 360° e) 109° C) Which of the following atoms cannot exceed the octet rule in a molecule? a) B b) Sn c) Pd d) I e) All atoms exceed the octet rule

1) A) In the Lewis structure for IF2–, how many lone pairs of electrons are around the central iodine atom? a) 0 b) 1 c) 2 d) 3 e) 4 B) The Cl–Xe–Cl bond angle in XeCl4 is closest to a) 90° b) 120° c) 150° d) 360° e) 109° C) Which of the following atoms cannot exceed the octet rule in a molecule? a) B b) Sn c) Pd d) I e) All atoms exceed the octet rule

World of Chemistry, 3rd edition

3rd Edition

ISBN:9781133109655

Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Chapter12: Chemical Bonding

Section: Chapter Questions

Problem 10A

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Part A) Draw the following lewis structures and give the formal charges for the atoms as well as the number of valence electrons I2 Part B)According to VSEPR theory, why are bonds and lone pairs spaced as far apart as possible? Part C)Why can we ignore the disposition of the lone pairs on terminal atoms? Part D)What are the bond angles for a molecule having an octahedral electronic geometry with two lone pairs and four bonds on the central atom?
Consider the following ion: BrO3 − . a) Show the full electron configuration for Br. b) Draw the most correct Lewis structure for BrO3 − and briefly explain why your Lewis structure is correct. c) If the structure is stabilised by resonance, draw at least one of the possible resonance forms. If it is not stabilised by resonance, briefly explain why. d) What is the electronic geometry of BrO3 − ? What is its molecular shape? e) Does BrO3 − have a dipole moment? Briefly justify your answer. f) On average, would you expect IO3 − to have longer or shorter bonds than BrO3 − ? Briefly explain your answer. g) Which of the following molecules would you expect to have the lowest vapour pressure? Briefly explain your choice. h) What is the molecular formula for Compound C? What is the empirical formula for Compound C?
Consider the following ion: BrO3−. a) Show the full electron configuration for Br. b) Draw the most correct Lewis structure for BrO3− and briefly explain why your Lewis structure is correct. c) If the structure is stabilised by resonance, draw at least one of the possible resonance forms. If it is not stabilised by resonance, briefly explain why. d) What is the electronic geometry of BrO3−? What is its molecular shape? e) Does BrO3− have a dipole moment? Briefly justify your answer. f) On average, would you expect IO3− to have longer or shorter bonds than BrO3−? Briefly explain your answer. g) Which of the following molecules would you expect to have the lowest vapour pressure? Briefly explain your choice. (IMAGE WITH POSSIBILITIES) h) What is the molecular formula for Compound C? What is the empirical formula for Compound C?
Consider the following ion: BrO3−. a) Show the full electron configuration for Br. b) Draw the most correct Lewis structure for BrO3− and briefly explain why your Lewis structure is correct. c) If the structure is stabilised by resonance, draw at least one of the possible resonance forms. If it is not stabilised by resonance, briefly explain why. d) What is the electronic geometry of BrO3−? What is its molecular shape? e) Does BrO3− have a dipole moment? Briefly justify your answer. f) On average, would you expect IO3− to have longer or shorter bonds than BrO3−? Briefly explain your answer. g) Which of the following molecules would you expect to have the lowest vapour pressure? Briefly explain your choice. h) What is the molecular formula for Compound C? What is the empirical formula for Compound C? Please andwer f, g and h the image is for g and h
Consider the following ion: BrO3−. a) Show the full electron configuration for Br. b) Draw the most correct Lewis structure for BrO3− and briefly explain why your Lewis structure is correct. c) If the structure is stabilised by resonance, draw at least one of the possible resonance forms. If it is not stabilised by resonance, briefly explain why. d) What is the electronic geometry of BrO3−? What is its molecular shape? e) Does BrO3− have a dipole moment? Briefly justify your answer. f) On average, would you expect IO3− to have longer or shorter bonds than BrO3−? Briefly explain your answer. g) Which of the following molecules would you expect to have the lowest vapour pressure? Briefly explain your choice. h) What is the molecular formula for Compound C? What is the empirical formula for Compound C? please answer c, d and e
Consider the following ion: BrO3−. a) Show the full electron configuration for Br. b) Draw the most correct Lewis structure for BrO3− and briefly explain why your Lewis structure is correct. c) If the structure is stabilised by resonance, draw at least one of the possible resonance forms. If it is not stabilised by resonance, briefly explain why. d) What is the electronic geometry of BrO3−? What is its molecular shape? e) Does BrO3− have a dipole moment? Briefly justify your answer. f) On average, would you expect IO3− to have longer or shorter bonds than BrO3−? Briefly explain your answer. h) What is the molecular formula for Compound C? What is the empirical formula for Compound C?
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 d
3) The molecule diphosphorus tetraoxide (P,O,) has two central atoms and four different resonance structures that do not violate the octet rule. Draw two of these resonance structures below. 4) The compound acetone is a common solvent. It has a chemical formula of CH,COCH, Acetone has three central atoms. (a) Draw the Lewis Dot structure for acetone. (b) Give the Ideal Bond Angle for all three central atoms. 5) Four covalent molecules are drawn below. :o: H. H-CH H H (1) (2) (3) (4) a) Define each of these molecules as polar or non-polar. (1) (2) (3) b) Describe the type of intermolecular force that each molecule would use: (1) (2) (3) (4)
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.
Consider the following ion: BrO3¯. a) Show the full electron configuration for Br. b) Draw the most correct Lewis structure for BrO3¯ and briefly explain why your Lewis structure is correct. c) If the structure is stabilised by resonance, draw at least one of the possible resonance forms. If it is not stabilised by resonance, briefly explain why. d) What is the electronic geometry of BrO3-? What is its molecular shape? e) Does BrO3 have a dipole moment? Briefly justify your answer. f) On average, would you expect IO3¯ to have longer or shorter bonds than BrO3¯? Briefly explain your answer. g) Which of the following molecules would you expect to have the lowest vapour pressure? Briefly explain your choice. Br HO HO. Br- Compound A Compound B Compound C h) What is the molecular formula for Compound C? What is the empirical formula for Compound C?
Consider peroxynitrite (chemical formula: ONOO−), a structural isomer of the nitrate anion. It is generated in the cell when nitric oxide (NO) reacts with the superoxide radical anion (O2-.). Peroxynitrite is a potent oxidant and nitrating agent and can lead to DNA and protein damage (this is the complete question) Draw the correct Lewis structure for peroxynitrite and indicate approximate bond angles. Tell how many molecular degrees of freedom of motion are present in peroxynitrite and what motions they correspond to.
1.) What is the Lewis structure for the methylthiolate anion, CH3S-. Carbon is the central atom. Show any nonzero formal charges. 2.) Proteins are large molecules that affect almost every function of the human body. Proteins are composed of smaller building blocks called amino acids. The simplest amino acid is glycine. When dissolved in water, two atoms in a glycine molecule have a formal charge. In the lewis structure of glycine C2H5NO2 all bonds are drawn (image is provided), but the unbonded valence electrons (lone pairs) are missing. Copy the structure and draw the missing valence electrons (lone pairs). Locate the 2 atoms that have a nonzero formal charge. Calculate the charge at these sites.