Conceptual Chemistry

Periodic trends are found with elements that have similar electron configurations, thus causing the elements to have similar physical and chemical properties. Graphics of the shell model are used to explain inner-shell shielding and effective nuclear charge. Duration: 7:00

Using the concepts of inner shell shielding and effective nuclear charge, periodic trends such as atomic size are explained. Duration: 5:28.

Another periodic trend is ionization energy, which is the amount of energy required to pull an electron away from an atom. The greater the effective nuclear charge, the more energy it will take to pull an electron away. Duration: 6:44

Vocabulary Flash Cards for Conceptual Chemistry, Chapter 4.