lecture17 - Lecture 17: F in a l R e v ie w Please dont...

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Final Review Lecture 17:
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Please don’t forget Evaluate this class on-line before Sunday March 16 th !
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What’s on it? Naming compounds (chapter 2) Lewis structures of covalent compounds (chapter 9) Formal charge and resonance structures (chapter 9) Electronegativity and bond polarity (chapter 9) Waves, photon energies and matter waves (chapter 7) Energy levels in hydrogen atom (chapter 7) Electron configurations (chapter 8) Periodic trends (chapter 8) Molecular geometry and VSEPR (chapter 10) Valence bond theory (chapter 10) Molecular orbital theory (chapter 10) Intermolecular interactions and states of matter (chapter 11) Types of solids (chapter 11) Mass relationships (chapter 3)
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How to study? Go through the lecture materials Practice the worksheets Practice MCWeb questions Practice the Midterms Do the practice Final Drink lots of coffee
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Naming compounds Give the systematic name of the following compounds: Cu(ClO 4 ) 2 LiCN CS 2 SeF 6 N 2 O 3 HF HNO 3 Copper (II) perchlorate Lithium cyanide Carbon disulfide Selenium hexafluoride Dinitrogen trioxide Hydrofluoric acid Nitric acid
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Photons and waves What is the wavelength of a photon of energy E = 2.67 x 10 -19 J? E = hc " = hc E = 6.62 " 10 # 34 J " s $ 3.00 " 10 8 m / s 2.67 " 10 # 19 J = 7.44 " 10 # 7 m = 744 nm What is the wavelength of an electron that travels with a velocity v = 3.34 x 10 5 m/s? = h mv = 6.62 " 10 # 34 J " s 9.11 " 10 # 31 kg $ 3.34 " 10 5 m / s = 2.18 " 10 # 9 m = 2.18 nm
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Hydrogen energy levels What is the wavelength of the photon needed to excite a hydrogen atom from n = 2 to n = 5? " E
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lecture17 - Lecture 17: F in a l R e v ie w Please dont...

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