answers - Exam 1 1311 F10 Key version A 1. Which of the...

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Exam 1 1311 F10 Key version A 1. Which of the following statements is TRUE concerning d orbitals? A. Each one is spherical in shape. B. All of the other answers are false. C. They all have two lobes and are “dumbbell” shaped. D. There are three of them for a given n value. E. A 3 d orbital is smaller than a 5 d orbital ______________________________________________________________________________________________________________ 2. Identify the element of Period 2 which has the following successive ionization energies, in kJ/mol. A. None of these choices is correct. B. Ne C. O D. B E. Li ______________________________________________________________________________________________________________ 3. Which of these elements has the greatest electron affinity? A. S B. Mg C. P D. Si E. Al ______________________________________________________________________________________________________________ 4. The electron configuration of a cobalt(III) ion is A. [Ar]3d 5 . B. [Ar]4s 1 3d 5 . C. [Ar]4s 2 3d 9 . D. [Ar]3d 6 . E. [Ar]4s 2 3d 4 . ______________________________________________________________________________________________________________
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[Ar]4s 2 3d 10 4p 3 ? A. 3A B. 1A C. 5A D. 2A E. 4A ______________________________________________________________________________________________________________ 6. Calculate the wavelength of a neutron that has a velocity of 2.00 m s –1 . (The mass of a neutron = 1.675 × 10 27 kg). A. 198 nm B. 5.05 mm C. 216 nm D. 1.98 × 10 –9 m E. 1.8 × 10 50 m ______________________________________________________________________________________________________________ 7. Consider the element with the electron configuration [Rn]7s 2 5f 7 . This element is A. a representative element. B. a noble gas. C. a nonmetal. D. a lanthanide element. E. an actinide element . ______________________________________________________________________________________________________________ 8. Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level. A. 8.22 × 10 14 s –1 B. 1.03 × 10 8 s –1 C. 1.35 × 10 -51 s –1 D. 3.08 × 10 15 s –1 E. 2.06 × 10 14 s –1 ______________________________________________________________________________________________________________ 9. Select the correct set of quantum numbers ( n , l , m l , m s ) for the first electron removed from tin, Sn.
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answers - Exam 1 1311 F10 Key version A 1. Which of the...

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