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Struktur-Bindn-+-Svar - Chap ter 1 Chap ter 1 MULTIPLE...

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Chapter 1 1 MULTIPLE CHOICE QUESTIONS Solomons Chapter 1 (Answers on page 14) Topic: Atomic Orbitals, Molecular Orbitals Hybridization 1. When the 1 s orbitals of two hydrogen atoms combine to form a hydrogen molecule, how many molecular orbitals are formed? A) 1 B) 2 C) 3 D) 4 E) 5 2. When the ls orbitals of two hydrogen atoms combine to form a hydrogen molecule, which molecular orbitals are formed? 3. The following electron configuration represents _______. 1s 2sp 3 2sp 3 2sp 3 2sp 3 4. Identify the atomic orbitals in the C-C sigma bond in ethyne. Chapter 1 2 Topic: Lewis Structures, Formal Charges 5. Listed below are electron dot formulas for several simple molecules and ions. All valence electrons are shown; however, electrical charges have been omitted deliberately. H H H H H H I II III IV V H : Be : H H : B : H H : N : H H : N : H H : O : H . . . . . . . . . . . . . . . . Which of the structures actually bear(s) a positive charge? A) I B) II C) III D) III & V E) IV & V 6. What is the formal charge on oxygen in the following structure? O H 3 C CH 3 CH 3 . . 7. In which structure(s) below does the oxygen have a formal charge of +1? O C H H O H O H H H O H 3 C CH 3 CH 3 II III IV I . . . . . . . . : . . H
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Chapter 1 3 8. Which structure(s) contain(s) an oxygen that bears a formal charge of +1? O H 3 C CH 3 CH 3 IV O H 3 C H H III O C O II O C H O I O C O O V . . . . . . : : . . . . . . : : : . . . . : : : . . : :
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