Sodium d calcium 50 complete the following table 4

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sodium ______________________ d. calcium ______________________ 50. Complete the following table. (4 points) Element name Element symbol Group number on periodic table Representative element, transition metal, or inner transition metal? Number of period Mg chromium 51. Describe the structure of the element chlorine, including a description of the nature of the particles that form its structure, the arrangement of these particles, the degree of motion of the particles, and the interactions between the particles. (4 points)
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7 52. Write abbreviated electron configurations for (a) rubidium, Rb, (b) nickel, Ni, and (c) bismuth, Bi. (3 points) a. rubidium, Rb ______________________ b. nickel, Ni ______________________ b. bismuth, Bi ______________________ 53. For each of the following situations, you are asked which of two objects or substances has greater energy. Explain your answer with reference to the capacity of each to do work, and indicate whether the energy that distinguishes them is kinetic energy or potential energy. (3 points) a. (1) A methane molecule, CH 4 , in the stratosphere or (2) a CH 3 molecule and a hydrogen atom formed by breaking one of the carbon-hydrogen bonds in a CH 4 molecule. b. (1) A water molecule moving at 1.63 x 10 3 mi/h or (1) the same water molecule moving at 1.81 x 10 3 mi/h. (These are the average velocities of water molecules at 110 ° C and 200 ° C.) c. (1) Iodine solid or (2) iodine gas. (Assume that the two systems are at the same temperature.) 54. Explain why electrons in atoms are often described in terms of electron clouds. (4 points)
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8 55. Draw a reasonable Lewis structure for each of the following formulas. (4 points) a. COF 2 b. N 2 H 4 56. Draw all of the reasonable resonance structures and the resonance hybrid for the carbonate ion, CO 3 2– . (4 points)
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