#9 Formal Charge, Resonance and The Shapes of Molecules and Ions

#9 Formal Charge, Resonance and The Shapes of Molecules and Ions

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Aaron King 660556233 Section 2 November 14, 2007 #9 Formal Charge, Resonance and The Shapes of Molecules and Ions 1. This is not a valid Lewis structure because the Carbon only has 6 valence electrons in its shell 2. 3. There are 18 valence electrons in a NO 3 - ion. The bond order is 1.5.
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4. 5. Yes. Because there are four total bond strengths for three different bonded oxygen atoms. Therefore, the bond order is 4/3. 6. NO 2 - has a stronger, therefore, a shorter N-O bond length. 7. The bond order is 1.5.
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8. Molecule Central Atom Lewis # Nonbonding Pairs Arrangement Shape of Molecule # Valence Electrons Structure # Bonding Pairs of Domain Polar or Nonpolar OF 2 O 2 Tetrahedral Bent 20 2 Polar ClF 3 Cl 2 Trigonal Bipyramidal T-shaped 28 3 Polar TeCl 5 - Te 1 Octahedral Square Pyramid 42 5 Polar XeF 4 Xe 1 Trigonal Bipyramidal See-saw 36 4 Polar H 3 O + O 1 Tetrahedral Trigonal Pyramidal
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Unformatted text preview: 8 3 Polar 9. a. OF 2 is from the bent bond structure from the tetrahedral domain arrangement. The ideal bond angle for tetrahedral is 109.5, but because of the two nonbonding pair of electrons, the actual bond angle is going to be less than 109.5. b. SnCl 2 is from the bent bond structure from the trigonal planar domain arrangement. The ideal bond angle for trigonal planar is 120, but because of the nonbonding pair of electrons, the actual bond angle is going to be less than 120. c. PF 3 is from the trigonal pyramidal structure from the trigonal planar domain arrangement. The ideal bond angle for tetrahedral is 109.5, but because of the nonbonding pair of electrons, the actual bond angle is going to be less than 109.5....
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This lab report was uploaded on 04/07/2008 for the course CHEM 1000 taught by Professor Mcintosh during the Fall '07 term at Rensselaer Polytechnic Institute.

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#9 Formal Charge, Resonance and The Shapes of Molecules and Ions

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