Quiz 1B - both the position and speed of an electron in an...

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Chem 127 Dr. Abel Quiz 1B 1. (5 points) Calculate the shortest wavelength photon emitted by the hydrogen atom in undergoing a transition from the n=7 level. Report your answer in nanometers. Shortest wavelength, highest change in energy, so n=7 to n=1 1/ λ = 1.097 x 10 7 (1/1 2 – 1/7 2 ) 1/ λ = 1.075 x 10 7 m -1 λ = 9.306 x 10 -8 m 93.06 nm 2. (6 points) Write the condensed electron configuration for the following (be careful, no partial credit): a. Tin [Kr]5s 2 4d 10 5p 2 b. Phosphorous [Ne]3s 2 3p 3 c. Manganese [Ar]4s 2 3d 5
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Chem 127 Dr. Abel Quiz 1B 3. Multiple Choice (4 points): Circle the best answer for each of the following (1 point each) A. All the following statements are correct except a. The photoelectric effect shows that light behaves as a wave.\ b. The Pauli Exclusion Principle states that each electron in an atom must have its own unique set of quantum numbers c. The Heisenberg Uncertainty Principle states that we cannot accurately determine
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Unformatted text preview: both the position and speed of an electron in an atom d. De Broglie proposed that matter, like light, could have both wave and particle properties B. Which of the following transitions would absorb a photon with the lowest frequency ? a. n = 2 → n = 3 b. n = 3 → n = 1 c. n = 5 → n = 6 d. n = 1 → n = 3 C. The orientation in space of an atomic orbital is associated with a. the angular momentum quantum number l b. the magnetic quantum number m l b. the spin quantum number m s d. the principal quantum number n D. 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. allow scientists to calculate an exact volume for the hydrogen atom d. describe regions of space in which one is most likely to find an electron...
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