In 2008 the International Union of Pure and Applied Chemistry (IUPAC) initiated a revision of the Periodic Table that reflects the fundamental role that the isotopic constitution of elements plays in understanding the concept of atomic weight. This is motivated by the potential misconception that we produce in students when we assign a single number to the atomic weight of an element. In this talk we will present the new Isotopic Periodic Table of the Elements and will use Otzi the Iceman as a motivating case study to illustrate the use of the Isotopic Periodic Table. Several online visualizations developed jointly between IUPAC and the King's Centre for Visualization in Science will be showcased.
