SCANTRON NAME MAD the Lewis structures of the molecules below and use them to answer the following questions. â ¡. BeCl2 III SF 17. Which of the molecules obeys the octet rule? A) 1 B) II C) III D) IV E) v 18. How many of the molecules are non-polar? A) I B) 2 C) 3 D) 4 E) They are all polar. 19. Which of these molecules show resonance? A) I B) II C) III D) IV E) V 20. What is the 4Hnn(J) for the rection H2(g)+11g) â 2HI(p? The bond enthalpies for H H 1-1 and H-I are 436.4, 151.0 and 298.3 kJ/mol, respectively 21. The molecular geometry of OF2 is A) -9.2 B) +9.2 C)-289.1 D) +289.1 E) 0.0 A) pyramidal B) square planar C) bent D) trigonal planar E) octahedral 22. The hybridization of the central atom in O, is: C) D) dsp3 E) dsp