Lutetium is a chemical element with symbol Lu and atomic number 71. It is considered the first element of the 6th-period transition metals and the last element in the lanthanide series, and is traditionally counted among the rare earths.
Lutetium's position in the periodic table is not entirely agreed on. Some models put it in group 3, others or at the end of the f block with lanthanum and actinium instead, while other types of tables only have scandium and yttrium, leaving lutetium in the f block.
Lutetium resists oxidation in dry air, but will slowly react with water. It will also react with most acids, both organic and inorganic.
Lutetium is a silvery white metal. It has a meting point of 1652 °C and a boiling point of 3402. Its density is 9.841 g/cm3.
Lutetium can be purchased from Metallium and eBay.
Reducing lutetium salts with calcium will yield lutetium metal.
- Make lutetium aluminium garnet
- Make lutetium tantalate
Lutetium reacts with water to release hydrogen, which is flammable.
Luthetium compounds are thought to be non-toxic. At least one compound, Motexafin lutetium has been studied in cancer treatment.
In closed containers, away from moisture and acids.
Since lutetium is expensive, it's best to try to recycle it.