Chapter 8, Problem 8.29QP

Periodic Properties I

A hypothetical element, X, has the following ionization energy values:

First ionization energy: 900 kJ/mol

Second ionization energy: 1750 kJ/mol

Third ionization energy: 14,900 kJ/mol

Fourth ionization energy: 21,000 kJ/mol

Another element, Y, has the following ionization energy values:

First ionization energy: 1200 kJ/mol

Second ionization energy: 2500 kJ/mol

Third ionization energy : 19,900 kJ/mol

Fourth ionization energy: 26,000 kJ/mol

1. a To what family of the periodic table would element X be most likely to belong? Explain?
2. b What charge would you expect dement X to have when it forms an ion?
3. c If you were to place elements X and Y into the periodic table, would element Y be in the same period as element X? If not in the same period, where might they be relative to each other in the periodic table?
4. d Would an atom of Y be smaller or larger than an atom of X? Explain your reasoning.