# Midterm 3 Practice Test

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Midterm #3 Practice Exam 1. The energy of a photon of light is __________ proportional to its frequency and __________ proportional to its wavelength. A. directly, inversely B. indirectly, not C. directly, directly D. inversely, inversely E. inversely, directly 2. What is the frequency of light (s-1) that has a wavelength of 1.23 x 10-6 cm? A. 2.44 x 1014 B. 3.69 C. 4.10 x 10-17 D. 2.44 x 1016 E. 9.62 x 1012  3. The energy of a photon that has a wavelength of 13.2 nm is __________ J. A. 1.99 x 10-25 B. 9.55 x 10-25 C. 6.62 x 1016 D. 1.51 x 10-17 E. 1.51 x 10-26 4. Of the following transitions in the Bohr hydrogen atom, the __________ transition results in the emission of the highest-energy photon. A. n = 3 n…show more content…
104 kJ/mol C. 52 kJ/mol D. -52 kJ/mol E. -104 kJ/mol 59. Give the number of lone pairs around the central atom and the molecular geometry of SCl2. A. 0 lone pairs, linear B. 1 lone pair, bent C. 2 lone pairs, bent D. 3 lone pairs, bent E. 3 lone pairs, linear 60. The geometry of the SF4 molecule is A. tetrahedral B. trigonal pyramidal. C. trigonal planar. D. square planar. E. distorted tetrahedron (seesaw). 61. According to VSEPR theory, which one of the following molecules is trigonal bipyramidal? A. SF4 B. XeF4 C. NF3 D. SF6 E. PF5 62. Which one of the following molecules has tetrahedral geometry? A. CF4 B. XeF4 C. BF3 D. NH3 E. AsF5 63. A molecule with 3 single bonds and 0 lone pairs of electrons is predicted to have which type of molecular geometry? A. Trigonal planar B. Trigonal pyramidal C. Bent D. Trigonal bipyramidal E. Linear 64. A central atom with 4 electron pairs (single bonds and/or lone pairs of electrons) could have which of the following molecular geometries? I. Trigonal bipyramidal II. Tetrahedral III. Trigonal pyramidal IV. Bent A. I and II B. II and III C. II, III, and IV D. I and IV E. I, II, and IV 65. The bond angles in water are expected to