History of the Periodic Table: Difference between revisions

There are eighteen distinct families in the periodic table. One example is the alkali metal family. It consists of all the elements in the periodic table that are very chemically reactive. The elements are lithium, sodium, potassium, rubidium, cesium, and francium. These metals conduct electricity easily and have a bright and shiny surface. They all react easily with water. Alkali metals are most commonly used in streetlights, soap, rayon, and paper. There are many different families. The others are: alkaline-earth metals, transition metals, post-transition metals, metalloids, nonmetals, halogens, and noble gases. <ref name=BJU/>