Ytterbium (Yb)
Atomic Number: 70
Atomic Weight: 173.04
Melting Point: 819
Boiling Point: 1194
Specific Gravity: 6.977 (alpha) 6.54 (beta)
Valence(s): 2 or 3
Ytterbium was discovered by de Marignac in 1878. It is commercially obtained from monazite.
This element may be added to stainless steel to improve some of its mechanical properties.
Ytterbium is named for a Swedish village, Ytterby.
[LM]
{RW}
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