![]() ![]() ![]() The top-row elements are called lanthanides and the bottom-row elements are actinides The inner transition metals: elements in the 2 rows at the bottom of the table. ![]() The transition metals: elements in the groups between the elements of the main group (groups 3-12).The main-group elements: elements in the 2 groups on the far left and the 6 groups on the far right of the periodic table (groups 1, 2, 13-18).Members of the same group have the same number of electrons in the outermost shells of their atoms and form bonds of the same type. Here He Lies Beneath Bed Clothes, Nothing On, Feeling Nervous, Naughty Mar gret Always Sighs, " Please Stop Clowning Around "Ī vertical column of elements is called a group. 3 rd period: Na, Mg, Al, Si, P, S, Cl, Ar.You should generally know the first 3 periods: A period forms a row of the periodic table. The chemical elements have a periodic pattern when they are arranged in ascending order of atomic number. Each vertical column corresponds to a group of elements with the same properties, each horizontal line corresponds to a periodĮach element of the periodic table is represented by a tile containing the name of the element (chemical symbol composed of one or two letters), the atomic number and the average mass (usually indicated with 4 significant figures) The elements are arranged by atomic number. A chart of 118 elements first published by Dmitri Mendeleev in 1869, in which elements with similar chemical and physical properties are grouped. ![]()
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