Arsenic
= Arsenic
{title2=As}
{wiki}
<Arsenic> is the <chemical element> with <atomic number> 33 and symbol $\mathrm{As}$. It is a <metalloid>. Its chemistry includes oxidation states $-3$, $+3$, and $+5$, and it occurs in both inorganic and organic compounds. Chemical form matters: elemental arsenic, <arsine>, and arsenic oxides differ in bonding and physical behavior.<Periodic Table by Royal Society of Chemistry>[Arsenic, element data and uses]{ref}