CHEM 0420 Lecture Notes - Lecture 17: Molecular Orbital Theory, Aluminium Oxide, Atomic Orbital
Document Summary
Metallic character decreases from left to right across the periodic table, which follows trends in ionization energy and electronegativity. Oxidation state trends: main group metals tend to have oxidation states that are equal to their cas group number. o. Late main group metals also have oxidation states that are equal to the cas group number minus 2: nonmentals have a variety of oxidation numbers. The most positive oxidastion state is typically equal to the group number. The most negative oxidation state is typically equal to the group number minus. Oxidation states between these extremes occur in increments of two. Second row elements behave differently than other elements in the same group, due to their smaller atomic radii and higher electronegativity. Band theory is used to describe the electronic energy levels in solids. It can be used to explain the electrical and thermal conductivity of metals, insulators, and semiconductors.
