Topic summary
Chemical Elements
Extracted from the Wikipedia article Chemical element.
Description
Chemical elements can be organized by name, chemical symbol, and also by properties (as atoms or as substances). The properties of chemical elements as kinds of atom include the atomic number, atomic weight, isotopes, abundance in nature, ionization energy, electron affinity, oxidation states, and electronegativity. The radioactive nuclides can be arranged by length of half-life. As substances, the properties of chemical elements include their density, melting point, boiling point, electrical conductance, thermal conductivity.