Periodic Table of Elements Revisited for Accommodating Elements of Future Years

The periodic table of elements shows only three columns and two separate rows for lanthanides and actinides called lanthanide and actinide series respectively. The newly discovered elements have already occupied the last row and last column of the table, which has the electronic orbital configuration, 7s² 5f¹⁴ 6d¹⁰ 7p⁶. After the discovery of two more new elements with atomic numbers 119 and 120, the third new element with atomic number 121, will have to be entered in the g-block series, according to the electronic orbital configuration theory, 7s² 5f¹⁴ 6d¹⁰ 7p⁶ 8s² 5g¹. Thus, in the present periodic table, such new g-series has to be written separately below the actinide series. Such a representation of elements would be quite confusing. Therefore, to avoid this and also to ensure the visibility of the ‘concept of inner orbitals like d, f, g, etc.’, a new and expanded form of the periodic table has been designed. This table is expected to accommodate all the new elements of higher atomic numbers and also give instant information on the electronic orbital structure of an element.