◄ As   Cr ▲   ▼ Mo   Br ►

Selen ∙ sélénium ∙ selenio ∙ selenio
group VI: RH₂, RO₃

• melting point: 217°C
• boiling point: 684.9°C
• density: 4.79 g/cm³

Se-75 is used in gamma radiography

☢ radioisotopes: Se-75 (T1/2=119.8 d)