We created a timeline of the history of the periodic table. The Periodic Table has constantly been improved and developed over the past 200 years, but in 1869 Dimitri Mendeleev finished the first version of the periodic table as we know it today, by arranging the elements by atomic mass and leaving spaces open for the elements that were not yet discovered. Elements on the periodic table can be grouped into families bases on their chemical properties and react in similar ways to other elements outside their family. Who invented the Periodic Table of Elements? The periodic table also gives us an idea of what the characteristics of an element might be and help us predict how an element might react based on in which group it is located. This periodic chart is a colorful addition to the periodic table wallpaper collection. Label and color code for : Metals, Nonmetals and metalloids. Label and color code the element symbols for solid, liquid, gas and man made. Most periodic tables represent color-coded to provide added information regarding elements and element groups. The Periodic Table of Elements can be used as an assisting tool in chemical calculations, when a specification of an element is needed it is easily found in the Periodic Table. Fill in each box with the element name, symbol, atomic weight and atomic number. 1, reacts readily with metals to form compounds that can be broadly classified as salts and, therefore, are known as the halogens, which is derived from a combination of Greek words that translate to 'salt makers. The horizontal rows on the periodic table are called periods. Each of the elements found in this column, which are boxed in lavender in Figure 2.2.1 2.2. All the members of a family of elements have the same number of valence electrons and similar chemical properties. How is the Periodic Table of Elements used? The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. The table lists all the elements that are currently known (118), in descending order of the number of protons that are present, in a single atom of the element. The Periodic table of elements is a tool, developed by scientists over hundreds of years. List of all the elements and their properties: The vertical columns on the periodic table are called groups or families because of their similar chemical behavior.