←Yb   La↑   ↓Tl   Hf→

Lutetium ∙ lutécium ∙ lutezio ∙ lutecio
group III: R₂O₃

• melting point: 1663°C
• boiling point: 3402°C
• density: 9.85 g/cm³

Natural Lutetium is radioactive as it contains 2.6 % of Lu-176 (52 Bq per g Lu). — Wikipedia

⚒ minerals:
‘ion-adsorbing laterite’

3 TBq of medical Lu-177 was applied in 2016 in Switzerland — URA-JB

☢ radioisotopes:
Lu-177 (T1/2=6.65 d) medical
Lu-176 (T1/2=38 Ga) NORM

Lutetium is contained in LYSO (LuYSiO₅:Ce3+) PET-Detectors. — Wikipedia