11) Which of the following forms an ionic solid? A) Ag B) C7H15NH2 C) Rb I D) S O3 12) Which type of bonding does Sr form upon solidification? A) covalent network B) ionic C) metallic D) molecular 13) Which of the following is considered a molecular solid? A) Au B) NH4NO3 C) I2 D) Rn E) None of these is a molecular solid. 14) Which of the following is considered an ionic solid? A) (NH4)2CO3 B) CBr4 C) SeBr2 D) XeF4 E) None of these is an ionic solid. 15) Which of the following is considered an atomic solid? A) F2 B) CsBr C) N2 D) Nb E) None of these is an atomic solid. 16) Which of the following is considered a nonbonding atomic solid? A) Ne B) Cu C) I2 D) Ca E) K 17) Which of the following substances should have the highest melting point? A) CO2 B) SrS C) Kr D) F2 E) MgO 18) Which of the following substances should have the highest melting point? A) Fe B) Ne C) Xe D) N2 E) CO 13.3 Short Answer Questions 1) Sketch the phase diagram of benzene. Make sure to label the axes and the different phases of benzene. Use the physical data provided below. melting point = 279 K boiling point = 353 K Tc = 562 K Pc = 48.4 atm Triple Point = 0.05 atm, 279 K 2) Give the edge length in terms of r for a simple cubic cell.