All 118 elements as numbered museum exhibits: discovery year, discoverers, name origin, category, state at room temperature — plus curator's notes on two dozen showpieces and an honest word where disc.
Data follows IUPAC (standard atomic weights; 2021 update) and the conventional discovery literature. Where discovery is contested — early lanthanides, the transfermium elements 102–105 — the plaque says so rather than picking a side. Atomic masses in brackets are for the most stable isotope of elements with no stable form.