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Lutetium (Lu): Fun Facts and Information About the Element

What is the symbol? Lu
What is the atomic number? 71
What is the atomic weight? 174.967
What is the melting point in Celsius? 1656
What is the boiling point in Celsius? 3315
What is the density (g/cm3)? 9.84
What year was it discovered? 1907
Who discovered the element? Georges Urbain
What group is the element in? 101
What is the electron configuration? [Xe] 4f14 5d1 6s2
What is the ionization energy? 5.4259
What element category is it in? Lanthanoids

Where is Lutetium Found?

Lutetium occurs in very small amounts in nearly all minerals containing yttrium, and is present in monazite to the extent of about 0.003%, which is a commercial source.

What is Lutetium Used For?

Stable lutetium nuclides, which emit pure beta radiation after thermal neutron activation, can be used as catalysts in cracking, alkylation, hydrogenation, and polymerization.