Modern Periodic Table

0 IA IIA III B IV B VB VI B VII B III A IV A VA VI A VII A ← VIII → IB II B Long form of the Periodic Table of the Elements with their atomic numbers and ground state outer electronic configurations. The groups are numbered 1-18 in accordance with the 1984 IUPAC recommendations. This notation replaces the old numbering scheme of IA–VIIA, VIII, IB–VIIB and 0 for the elements.