From electron configuration, we can predict: (1) The smallest atoms are at the upper right of the periodic table The smallest atoms have the most strongly held electrons ( Represented by ionization energy(电离能), the amount of energy needed to pull an electron away from an atom). The ionization energy also determines the atoms chemical behavior which will be discussed in chapter 6 Increasing First lonization Energy 12A 35 特NE9元g0o 43 Zr Nb Mo Te Ru Rh Pd Ag Cd In Sn St Au Hg TI 0n12a311(516017118From electron configuration, we can predict: (1) The smallest atoms are at the upper right of the periodic table. The smallest atoms have the most strongly held electrons. (Represented by ionization energy (电离能), the amount of energy needed to pull an electron away from an atom). The ionization energy also determines the atom’s chemical behavior, which will be discussed in chapter 6. Increasing First Ionization Energy Increasing First Ionization Energy