Young N Redefine has made the poster of periodic table of elements very simple that it will be easier for the science students to learn the correlation between different groups of elements & effortless for the teachers to teach the young students. All the elements are color-coded respective to the general type of substance that element falls under and its classified into ten groups here: such as Alkali metal, Alkaline earth, Transition metal, Basic metal, Semimetal, Nonmetal, Halogen, Noble gas, Lanthanide, Actinide. 3-mil thick laminations add more durability to the poster & protect it from the dust, water & tears. The science chart is available in 15X20, 18X24, 24X30, 36x54, 42x60 formats. You can easily hang it on your bedroom and classroom walls.