(a) Based on the lattice energies of MgCl2 and SrCl2 given in Table 8.2, what is the range of values that you would expect for the lattice energy of CaCl2?
(b) Using data from Appendix C, Figure 7.9, and Figure 7.11 and the value of the second ionization energy for Ca, 1145 kJ/mol, calculate the lattice energy of CaCl2.

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2372 2081 1312 1681 9 1402 1314 1012 100K As Se 1140 520 M Al 786 Br 1351 n 578 0 Ge 947 941 Xe 1170 717 1 763 | 76 737 1 746 0720804 840 880 870 890 Ga 762 K 419 633 | 659 | 651 | 653 Sb Te 1008 Mo T 684 702 710 731 Sn 834 AU 1 1037 Ba Lu 503 524 76170760 716 , 812 , 1A 2A 3A AA 5A 6A A A Increasing ionization energy 1A 8A He 73 2A 3A 4A 5A 6A 7A >0 Li Be -60 0 Na Mg -53 0 K Ca -48-2 Rb Sr -475 -27-122 0 -141-328 0 Al Si P SCI Ar -43 -134-72 200-349>0 Ga Ge AsSe Br Kr 0 -119-78-195-325>0 In Sn SbTeIXe 30 -107-103-190-2950