Arsenic is a brittle metalloid with a history of both industrial use and notoriety for toxicity in inorganic forms.
Properties of Arsenic | It forms multiple allotropes and oxidation states commonly +3 and +5 and produces toxic inorganic arsenic species.
Uses of Arsenic | Arsenic occurs in mineral ores and is used in some semiconductors, wood preservatives and historically in pesticides and alloys.
Isotopes of Arsenic | Stable isotope As 75 is natural; inorganic arsenic compounds are highly toxic and carcinogenic, requiring strict environmental and occupational controls.