Exam 7: Covalent Bonds and Molecular Structure
Exam 1: Chemistry: Matter and Measurement219 Questions
Exam 2: Atoms, molecules, and Ions257 Questions
Exam 3: Formulas, equations, and Moles208 Questions
Exam 4: Reactions in Aqueous Solutions174 Questions
Exam 5: Periodicity and the Atomic Structure of Atoms158 Questions
Exam 6: Ionic Bonds and Some Main-Group Chemistry173 Questions
Exam 7: Covalent Bonds and Molecular Structure232 Questions
Exam 8: Thermochemistry: Chemical Energy163 Questions
Exam 9: Gases: Their Properties and Behavior182 Questions
Exam 10: Liquids,solids,and Phase Changes186 Questions
Exam 11: Solutions and Their Properties192 Questions
Exam 12: Chemical Kinetics206 Questions
Exam 13: Chemical Equilibrium166 Questions
Exam 14: Aqueous Equilibria: Acids and Bases224 Questions
Exam 15: Applications of Aqueous Equilibria190 Questions
Exam 16: Thermodynamics: Entropy, free Energy, and Equilibrium144 Questions
Exam 17: Electrochemistry176 Questions
Exam 18: Hydrogen, oxygen, and Water175 Questions
Exam 19: The Main-Group Elements202 Questions
Exam 20: Transition Elements and Coordination Chemistry185 Questions
Exam 21: Metals and Solid-State Materials149 Questions
Exam 22: Nuclear Chemistry85 Questions
Exam 23: Organic and Biological Chemistry285 Questions
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A molecular model of NO3- is shown below.Based on the best Lewis electron-dot structure for NO3- and formal charge considerations,what is the predicted N-O bond order for each N-O bond? 

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The following ball-and-stick molecular model is a representation of the amino acid alanine (unshaded spheres = H).Only the connections between atoms are shown;multiple bonds and nonbonded electrons are not indicated.
-In order to complete an electron-dot structure of alanine,the nitrogen atom needs

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Elements that can accommodate more than eight electrons in their valence shell occur only in periodic table period
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Of the following elements,which has the highest electronegativity?
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In the best Lewis structure for NO+,what is the formal charge on the N atom?
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Which drawing represents the molecular orbital containing the highest energy electrons in the H2 molecule in its ground state?
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Which orbital hybridization is associated with a tetrahedral charge cloud arrangement?
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The electronegativity is 2.1 for H and 1.8 for Si.Based on these electronegativities,SiH4 would be expected to
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What is the geometry around the central atom in the following molecular model of XeF4? 

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A molecular compound that obeys the octet rule in which all atoms have a zero formal charge is
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What are the bond angles in the following molecular model of BCl3? 

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