Using the data in Tables 9 1 and 9 2, estimate the dissociation energy of the three ionically bonded molecules CsI, NaF, and LiI Your results are probably all higher than those in Table 9 2 Explain why Tables 9 1 Tables 9 2 Table 9 1 Ionization energies of alkali metal atoms and electron affinities of halogen atoms Ionization energy (eV) Halogen Electron affinity (eV) Alkali metal Li Na K Rb Cs Fr 5 39 5 14 4 34 4 18 3 89 4 07 F C1 Br I At 3 40 3 62 3 36 3 06 2 8

Question: Using the data in Tables 9-1 and 9-2, estimate the dissociation energy of the three ionically bonded molecules CsI, NaF, and LiI. Your results are

Using the data in Tables 9-1 and 9-2, estimate the dissociation energy of the three ionically bonded molecules CsI, NaF, and LiI. Your results are probably all higher than those in Table 9-2. Explain why.

Tables 9-1

Table 9-1 Ionization energies of alkali metal atoms and electron affinities of

Tables 9-2

halogen atoms Ionization energy (eV) Halogen Electron affinity (eV) Alkali metal Li

Table 9-1 Ionization energies of alkali metal atoms and electron affinities of halogen atoms Ionization energy (eV) Halogen Electron affinity (eV) Alkali metal Li Na K Rb Cs Fr 5.39 5.14 4.34 4.18 3.89 4.07 F C1 Br I At 3.40 3.62 3.36 3.06 2.8

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