symbol in Japanese. My Japanese dictionary calls it the Ha-kenkoroitsu. (from the German word Hakenkreuz, crooked cross) and it describes it at the 45-degree clockwise manji used by the Nazi party. That symbol is usually surrounded by a circle. In Japan. it is unusual to see the manji at that angle.
The first person to propose that magnesium was an element was Joseph Black of Edinburgh in 1755, and an impure form of metallic magnesium was produced in 1792 by Anton Rupprecht who heated magnesia (magnesium oxide, MgO) with charcoal. He named the element austrium after his native Austria.
The Discovery and History of the Periodic Table Author: Dr. Doug Stewart The periodic table we use today is based on the one devised and published by Dmitri Mendeleev in 1869. Mendeleev found he could arrange the 65 elements then known in a grid or table so that each element had: 1. A higher atomic weight than the one on its left. For example, magnesium (atomic weight 24.3) is placed to the right of sodium (atomic weight 23.0). 2. Similar chemical properties to other elements in the same column - in other words similar chemical reactions. Magnesium, for example, is placed in the alkali earths' column.