Metalloids
Type a name, a symbol, an atomic number — or something vague like radioactive, liquid or d-block.
7 elements match
B
Boron
A metalloid of extremes: harder than most metals, essential to plants, and the element that makes borosilicate glass survive a flame.
Si
Silicon
The element that turned sand into civilisation's substrate: every processor you have ever used is a slab of ultrapure silicon.
Ge
Germanium
The semiconductor that came first: the very first transistor was made of germanium, not silicon.
As
Arsenic
The classic poison of history — tasteless, undetectable for centuries, and still a groundwater crisis for millions.
Sb
Antimony
A brittle metalloid used since antiquity as eye cosmetic, and now as a flame retardant.
Te
Tellurium
Rare on Earth, common in the universe, and the element that makes rewritable optical discs work.
At
Astatine
The rarest naturally occurring element on Earth — perhaps 25 grams exist in the entire crust at any moment.
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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.