Quiz 1A - Chem127 Dr.Abel Quiz1A 1 Multiple Choice(4 points...

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Chem 127 Dr. Abel Quiz 1A 1. Multiple Choice (4 points): Circle the best answer for each of the following (1 point each) A. The orientation in space of an atomic orbital is associated with a. the spin quantum number m s b. the magnetic quantum number m l c. the angular momentum quantum number l d. the principal quantum number n B. Atomic orbitals developed using quantum mechanics a. describe exact paths for electron motion b. give a description of the atomic structure which is exactly the same as the Bohr model c. describe regions of space in which one is most likely to find an electron d. allow scientists to calculate an exact volume for the hydrogen atom C. All the following statements are correct except a. The Pauli Exclusion Principle states that each electron in an atom must have its own unique set of quantum numbers b. The Heisenberg Uncertainty Principle states that we cannot accurately determine both the position and speed of an electron in an atom
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Unformatted text preview: c. De Broglie proposed that matter, like light, could have both wave and particle properties d. The photoelectric effect shows that light behaves as a wave. D. Which of the following transitions would absorb a photon with the highest frequency ? a. n = 2 → n = 3 b. n = 3 → n = 1 c. n = 5 → n = 6 d. n = 1 → n = 3 2. (6 points) Write the condensed electron configuration for the following (be careful, no partial credit): a. Manganese [Ar]4s 2 3d 5 b. Phosphorous [Ne]3s 2 3p 3 c. Tin [Kr]5s 2 4d 10 5p 2 Chem 127 Dr. Abel Quiz 1A 3. (5 points) Calculate the shortest wavelength photon emitted by the hydrogen atom in undergoing a transition from the n=6 level. Report your answer in nanometers. Shortest wavelength, highest change in energy, so n=6 to n=1 1/ λ = 1.097 x 10 7 (1/1 2 – 1/6 2 ) 1/ λ = 1.067 x 10 7 m-1 λ = 9.376 x 10-8 m 93.76 nm...
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  • Spring '08
  • Able
  • Atom, Electron, Uncertainty Principle, Pauli exclusion principle, de Broglie

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