Metalloids (Semimetals) are elements that exhibit intermediate properties between metals and nonmetals. They are located along the zig-zag line in the periodic table, separating metals from non-metals.
- Boron: Used in fireworks for green flames; cleaning agents and pest control.
- Silicon: computer chips; waterproof sealants (silicones).
- Germanium: production of semiconductors
- Arsenic: historically as a pesticide , production of semiconductors
- Antimony: Used in paints and ceramic enamels; as a cosmetic.
- Tellurium: manufacturing of thermoelectric devices for power generation and cooling applications.
- Polonium: Rare and highly radioactive; Limited use due to extreme toxicity
