Main group elements
The First 36 Main Group Elements: Hydrogen to Barium Initially we shall limit our initial discussions to s and p-block elements, to first 36 main group elements, hydrogen to barium: However, as simple substances in their standard state (1atm pressure and 25°C) the main group elements present as a diverse and complicated collection of substances: As discussed elsewhere in this web book – see the pages on the Classification of Matter and the Tetrahedron of Structure, Bonding & Material Type pages – elemental and binary substances exhibit four extreme material types [metallic, ionic, molecular & network], however the elements present as just: metallic, molecular & network: When this analysis is applied to the set of the first 36 main group elements we find: 16 element...