Ytterbium

Ytterbium
Properties
Atomic symbol	Yb
Atomic number	70
Classification	Metallic
Atomic mass	173.04 amu
Other Information
Date of discovery	1878
Name of discoverer	Jean Charles Galissard de Marignac
Name origin	Named for Ytterby, Sweden
Uses	Used in metallurgical and chemical experiments and sometimes used in stress gauges.
Obtained from	Found in minerals such as yttria, monazite, gadolinite, and xenotime.

Ytterbium is a soft metallic element. It belongs to the rare earth group.