Precious metals
Type a name, a symbol, an atomic number — or something vague like radioactive, liquid or d-block.
8 elements match
Ru
Ruthenium
A platinum-group metal that hardens its neighbours and catalyses ammonia synthesis.
Rh
Rhodium
The most expensive precious metal on Earth by weight, and the reason your car's exhaust is not toxic.
Pd
Palladium
The metal that soaks up hydrogen like a sponge — up to 900 times its own volume.
Ag
Silver
The best electrical and thermal conductor of any element, and an antimicrobial known since antiquity.
Os
Osmium
The densest naturally occurring element: a litre of osmium weighs 22.6 kg.
Ir
Iridium
The most corrosion-resistant metal known, and the fingerprint of the asteroid that ended the dinosaurs.
Pt
Platinum
The catalyst metal: platinum makes reactions happen that would otherwise need impossible conditions.
Au
Gold
Chemically almost inert, endlessly ductile, and valued by every civilisation that ever found it.
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What this understands
Identity
Names, symbols and atomic numbers, in any case. au, Gold and 79 all land on the same page.
Families & blocks
noble gas, halogen, lanthanide, d-block, period 4, group 17.
Properties
radioactive, synthetic, liquid, gas, precious — and any text from an electron configuration.