Trends in Physical Properties of Group 17 Elements
During the period 1811-1886, the halogens were discovered. They are non-metallic elements such as: Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I) and astatine (At)...
Multi-molecular, Macromolecular and Association Colloids
Colloidal solutions can also be classified on the basis of constitution of the particles of the dispersed phase. The tree types of colloids are given...