The IE2for sulfur and the IE1for chlorine are 23.343 eV and 12.969 eV, respectively.

The IE2 for sulfur and the IE1 for chlorine are 23.343 eV and 12.969 eV, respectively. Assuming ionization energy is directly proportional to Z*/r2 and using only information for S+ and Cl, calculate the ionic radius for S+. Use the radius of 99 pm for Cl. Is your answer reasonable based on the radius of S?