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The Element Lutetium


"The Atom"

Definition of the Lutetium Element
A silvery-white rare-earth element that is exceptionally difficult to separate from the other rare-earth elements, used in nuclear technology. It is the hardest and the densest of the lanthanides. The Atomic Number of this element is 71 and the Element Symbol is Lu.

The Properties of the Lutetium Element
Symbol of Element : Lu
Atomic Number: 71
Atomic Mass: 174.967 amu
Melting Point: 1656.0 C - 1929.15 K
Boiling Point: 3315.0 C - 3588.15 K
Number of Protons/Electrons: 71
Number of Neutrons: 104
Crystal Structure: Hexagonal
Density @ 293 K: 9.85 g/cm3
Color: silvery-white

Origin / Meaning of the name Lutetium
The name originates from the Latin word Lutetia from the ancient Latin name for the city of  Paris.

Periodic Table Group and Classification of the of the Lutetium Element
Elements can be classified based on their physical states (States of Matter) e.g. gas, solid or liquid. This element is a solid. Lutetium is classified as an element in the Lanthanide series as one of the "Rare Earth Elements" which can located in Group 3 elements of the Periodic Table and in the 6th and 7th periods. The Rare Earth Elements are divided into the Lanthanide and Actinide series. The elements in the Lanthanide series closely resemble lanthanum, and one another, in their chemical and physical properties. Their compounds are used as catalysts in the production of petroleum and synthetic products. Nearly 75% of all the elements in the Periodic Table are classified as metals which are detailed in the List of Metals.

Facts about the Discovery and History of the Lutetium Element
Lutetium was discovered by by French scientist Georges Urbain and Austrian mineralogist Baron Carol Auer von Welsbach in 1907.

History of the Periodic Table
Check out the brief History of the Periodic Table which details dates and the names of famous scientists and chemists who contributed to the development of the Periodic Table.

Occurrence of the Lutetium Element
Obtained from gadolinite & xenotime.

Abundances of the element in different environments
% in Universe 110-8%
% in Sun 110-7%
% in Meteorites 2.910-6%
% in Earth's Crust 0.000056%
% in Oceans 1.510-11%
% in Humans N/A

Associated Uses of Lutetium
No known uses

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Rare Earth Elements
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