The alkali metals, halogens and noble gases are three important groups in the periodic table. The alkali metals are soft, reactive metals. They react vigorously with water and become more reactive as you go down the group.The halogens are reactive non-metals.They become darker as you go down the group.he elements in group 1 are called the alkali metals. They belong to the left-hand column in the periodic table. They are very reactive and must be stored in oil to avoid contact with air or water.
Gaul (Latin Gallia, French Gaule) is the name given by the Romans to the territories where the Celtic Gauls (Latin Galli, French Gaulois) lived, including present France, Belgium, Luxemburg and parts of the Netherlands, Switzerland, Germany on the west bank of the Rhine, and the Po Valley, in present Italy.
Julius Caesar established full Roman control over Gaul in 51 B.C., but by 400 A.D., Rome was in decline. Gaul was attacked by neighboring tribes, including Visigoths, Vandals, and the Germanic Franks, from which France would eventually get its name. In 843 a treaty created the territory of West Francia, which would later become France.