YbZ =  70

From the Swedish "Ytterby", meaning "outer village"
(AM) Atomic Mass 173.04  amu    Oxidation States +2, +3
   (BP) Boiling Point 1193  °C    (MP) Melting Point 824  °C
   (ρ) Density 6.97  g/cm3    Crystal Structure Face Centered Cubic
   ( χ ) Electronegativity 1.1    (AR) Atomic Radius 1.7  Å
   Physical State Solid (C) Heat Capacity 0.155  J/g °C
Electronic-Config [Xe]  4f14  6s2     (I1) First Ionization E 603.42  kJ/mol
   (ΔHvap) Heat of Vaporization 159  kJ/mol     (ΔHfus) Heat of Fusion 7.66  kJ/mol
   Year of Discovery 1878    Location of Discovery Switzerland
(E°) Standard Potential Yb2+⇔ Yb (-2.760 V),   Yb3+⇔ Yb (-2.190 V)
Stable isotopes  168Yb,  170Yb,  171Yb,  172Yb,  173Yb,  174Yb,  176Yb
Discovered/Synthesized by Jean Charles Galissard de Marignac
Natural Source The mineral/ore bastnasite, monazite, loparite
Common Uses Fiber optic signal amplifiers, infrared fiber lasers, stainless steel alloys
Other Info Used in infrared lasers for fiber-optic networks
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