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06ch260ex2practice - CHEM 260 Practice exam 2 June 5 2006...

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CHEM 260. Practice exam 2. June 5, 2006 PRINT NAME_______________________ ________________________ TABLE I, USEFUL INFORMATION k B = Boltzmann's constant = 1.38 x 10 -23 J/K h = Planck's constant = 6.6 x 10 -34 Jsec C = velocity of light = 3 x 10 8 m/sec m e = the mass of the electron = 9.1 x 10 -31 kg a 0 = Bohr radius = 53 pm N a = Avogadro’s number = 6.022 × 10 23 molecules/mol 1amu = 1.67 × 10 -27 kg Question I (%) Multiple Choice. Circle the letter corresponding to the best answer to each of the following questions. 1. Of the following, the electromagnetic radiation with the least energy is: a. radio waves b. gamma rays c. X-rays d. ultra violet light e. visible light 2. An atomic orbital whose azimuthal or orbital quantum number is 3 is: 3. The Pauli exclusion principle states that: 4. The maximum number of electrons that any orbital can contain is: 1
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5. The set of quantum numbers for an electron in an orbital that is not allowed is: a. n = 2, l = 1, m = 0, s = 1/2 b. n = 3, l = 2, m = 1, s = 1/2 c. n = 2, l = 2, m = 0, s = 1/2 d. n = 2, l = 0, m = 0, s = -1/2 e. n = 4, l = 2, m = 0, s = -1/2
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