IONIC RADIUS. Ions are formed when the neutral atoms lose or gain electrons. A positive ion or cation is formed by the loss of one or more electrons by the neutral atom whereas a negative ion or anion is formed by the gain of one or more electrons by the atom.The term ionic radii refers to the size of the ions in the ionic crystals.The ionic radius of an ion may vary from crystal to crystal because of change in surrounding ions. The equilibrium distance between the nuclei of the two adjacent ions can be determined by X-ray analysis of ionic crystals.he term ionic radii refers to the size of the ions in the ionic crystals. The ionic radius of an ion may vary from crystal to crystal because of change in surrounding ions. The equilibrium distance between the nuclei of the two adjacent ions can be determined by X-ray analysis of ionic crystals.
Sir William Woodthorpe Tarn, of the British Academy, regarded worldwide as having written the definitive work on Alexander the Great, states in the opening paragraph of his book Alexander the Great that Alexander certainly had from his father (Philip II) and probably from his mother (Olymbia) Illyrian, i.e.
Alexander the Great Expands Greece. One of the major events of Ancient Greece was the reign of Alexander the Great. From 333 to 323 BC, he greatly expanded the territory of Greece from mainland Greece all the way to present day Afghanistan through conquest and assimilation. He died at age 32.ritten by: Percila Jackson â¢ edited by: Noreen Gunnell â¢ updated: 3/10/2014. The events of Ancient Greece were varied and important to the history of the world. There were many cultural, intellectual and governmental achievements, as well as major wars.