Exam 1 1311 qs

Exam 1 1311 qs - Exam 1 1311 F10 Key version A 1. Which of...

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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 . _______________________________________________________________________________________________________ _______ 5. In what group of the periodic table is the element with the electron configuration [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
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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. A. 5, 1, 0, ½
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This note was uploaded on 10/20/2011 for the course UNIV 1010 taught by Professor N/a during the Spring '11 term at Acadia.

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Exam 1 1311 qs - Exam 1 1311 F10 Key version A 1. Which of...

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