ISSN: 2639-2534
Authors: Al Ossmi LHM and Chasib K F*
The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number, and recurring chemical properties, whose structure shows periodic trends. However, the current periodic table shows a gaps and separated groups of elements in which the f-block elements of Lanthanides and Actinides are split. Keeping the current the atomic number arrangements of groups and periods, this research has proposed new method of elements arrangement, in which the separated f-block elements of Lanthanum, (Lanthanides & Actinides) were emphasized to their proper position in the table rather than remaining exiled. This new Method of elements arrangement proposed in this research to fit with periodic system of elements in the IUPAC's Periodic Table. The main outcome is to introduce layout regularity, which may reflect the regularity of the periodic law more faithfully. In this research, elements are placed at groups and periods according to atomic numbers which were horizontally displayed into 7 Periods and 12 Groups vertically, this displays in addition to 20 horizontal coordination (named as Nada involved in this study) to determine and dispense altogether the elements positions at the periodic system, determining and dispensing altogether the elements positions at this 3D-modified periodic table. Application of this 3D-modified table helps to determine the atomic number to any element at any part at the main body of the periodic table. In addition, the relationship of f-block elements to the other blocks of the periodic table also becomes easier to see. In addition, this method extensible to expand future table and determining the atomic number and positions of the 55 future elements starting from 119 till the element of 136, at the main body of the IUPAC's Periodic Table.
Keywords: 3D-modified periodic table; f-block Elements; Lanthanides and Actinides; IUPAC
