@vicgrinberg Have long maintained that this is more valuable to teach in schools than just the 'plain' periodic table - it ties chemistry and physics together!

But, it throws up so many questions, such as that 'gold ring on your finger' - how come there is enough of it here, right now, to make the ring, and yet there are no (apparent) nearby 'merging neutron stars' or 'dying low mass stars'...