102 Exam 2 practice F13 (from F12)

Hint remember about shielding and electron electron

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Unformatted text preview: e system 5) The formation of the diatomic molecule chlorine from two monatomic chlorine atoms is a. endothermic because bonds are only formed b. endothermic because bonds are only broken c. exothermic because bonds are only formed d. exothermic because bonds are only broken CHEM 102 Fall 2013 Exam 2 Practice 1 Hunter College of the City University of New York Department of Chemistry & Biochemistry 6) Which of the following atoms has the highest ionization energy? HINT: Remember about shielding and electron- electron repulsions a. O b. N c. Mg d. Na 7) Which of the following elements has the largest atomic radius? a. Si b. O c. C d. Mg 8) The de Broglie wavelength of a tennis ball of mass 60 g moving with a velocity of 10 m/s is approximately? Remember that 1 J = 1 kg- m2/s2 a. 10- 36 m b. 10- 33 m c. 10- 31 m d. 10- 29 m 9) The maximum number of electrons in an atom that can have the quantum numbers n=3, l=2 is: a. 2 b. 5 c. 10 d. 18 10)Which of the following statements is true about the ionization energy of Mg+? a. It will be smaller that the ionization energy of Mg b. It will be larger than the ionization energy of Mg2+ c. It will be equal to and opposite in sign to the electron affinity of Mg d. It will be equal to and opposite in sign to the electron affinity of Mg2+ 11)Given the following first ionization energies for a particular element, identify the element: I1 I2 580 kJ/mol 1815 kJ/mol a. b. c. d. I3 I4 I5 2740 kJ/mol 11600 kJ/mol 18500 kJ/mol Na Mg Al Si CHEM 102 Fall 2013 Exam 2 Practice 2 Hunter College of the City University of New York Department of Chemistry & Biochemi...
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