Valence Bond Theory and Molecular Orbital Theory
- Page ID
- 22666
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| 1. What is the hybridization of the oxygen atom in water? | ||
| (a) | sp | |
| (b) | sp2 | |
| (c) | sp3 | |
| (d) | It is not hybridized. | |
| 2. When a double bond is formed between two atoms, one of the bonds is a sigma bond and the other is a pi bond. The pi bond is created by the overlap of... | ||
| (a) | sp2 hybrid orbitals | |
| (b) | sp3 hybrid orbitals | |
| (c) | p orbitals | |
| (d) | s orbitals | |
| 3. The central atom in BrF5 has _?_ bonding pairs of electrons and _?_ non-bonding pairs of electrons. | ||
| (a) | 1...5 | |
| (b) | 0...5 | |
| (c) | 5...1 | |
| (d) | 5...0 | |
| 4. Which of the following molecules does not have a net dipole moment? | ||
| (a) | H2O | |
| (b) | NH3 | |
| (c) | BF3 | |
| (d) | BrF5 | |
| 5. What is the bond order in NO2+? | ||
| (a) | 1.5 | |
| (b) | 2 | |
| (c) | 3 | |
| (d) | 4 | |
| 6. What is the electron-pair geometry of the central oxygen atom of ozone (O3)? | ||
| (a) | linear | |
| (b) | trigonal planar | |
| (c) | tetrahedral | |
| (d) | trigonal bipyramidal | |
| 7. What is the molecular geometry for ammonia (NH3)? | ||
| (a) | saw horse | |
| (b) | trigonal planar | |
| (c) | tetrahedral | |
| (d) | pyramidal | |
| 8. The molecular orbital diagram for the carbide ion (C22-) would show which of the following molecular orbitals? | ||
| (a) | s1s2 s*1s2 s2s2 s*2s2 p2p4 | |
| (b) | s1s2 s*1s2 s2s2 s*2s2 p2p4 s2p2 | |
| (c) | s1s2 s*1s2 s2s2 s*2s2 p2p4 s2p2 p*2p2 | |
| (d) | s1s2 s*1s2 s2s2 s*2s2 p2p4 s2p2 p*2p4 | |
| 9. Which of the following best represents the 3-dimensional view of H2N-?
| ||
| 10. Which of the following represents the best resonance structure for N2O?
| ||
| 11. What is the hybridization of the sulfur atom is SF4? | ||
| (a) | sp2 | |
| (b) | sp3 | |
| (c) | sp3d | |
| (d) | sp3d2 | |
| 12. What is the hybridization of the xenon atom in XeF4? | ||
| (a) | sp2 | |
| (b) | sp3 | |
| (c) | sp3d | |
| (d) | sp3d2 | |
