Question: Using the ionic radii given in Table 9.3, estimate the energy to form a mole of Na + F - ion pairs from the corresponding

Using the ionic radii given in Table 9.3, estimate the energy to form a mole of Na⁺F^- ion pairs from the corresponding atomic ions.
Table 9.3 lonic Radii (in pm) of Some Main-Group Elements Period 1A 2A ЗА 6A 7A 2 Lit 2+ O?- F- 60 31 140 136 3 Na+ Mg²+ Al3+ S?- Cl- 95 65 50 184 181 4 K+ Са+ Ga3+ Se2- Br- 133 99 62 198 195 Rb+ Sr+ In3+

Table 9.3 lonic Radii (in pm) of Some Main-Group Elements Period 1A 2A 6A 7A 2 Lit 2+ O?- F- 60 31 140 136 3 Na+ Mg+ Al3+ S?- Cl- 95 65 50 184 181 4 K+ + Ga3+ Se2- Br- 133 99 62 198 195 Rb+ Sr+ In3+ Te?- I- 148 113 81 221 216 6. Cs+ Ba?+ T3+ 169 135 95

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