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Name: Ytterbium
Symbol: Yb
Atomic Number: 70
Atomic Mass: 173.04 g
Number of Protons/Electrons: 70
Number of Neutrons: 103
Ionic Radius: Yb2+ / 0.93 Angstrom
Yb3+ / 0.858 Angstrom
Metal
Melting Point: 816.0 °C
Boiling Point: 1193.0 °C
Density @ 293 K: 6.965 g/cm3
Oxide
Melting Point: 2346.0 °C
Density cubic C: 9.2007 g/cm3
Formula: Yb2O3
Molecular weight: 394.08 g
Metal %: 87.8
Dehydrated Carbonate
Formula *: Yb2(CO3)3
Molecular weight: 526.11 g
Oxide %: 74.9
Anhydrous Chloride
Formula *: YbCl3
Molecular weight: 279.40 g
Oxide %: 70.5
Toxicity LD 50.PO: (mouse) 6700 mg/kg
Anhydrous Fluoride
Formula *: YbF3
Molecular weight: 230.04 g
Oxide %: 85.65
Hydroxide
Formula *: Yb(OH)3
Molecular weight: 224.06 g
Oxide %: 87.95
Dehydrated Nitrate
Formula *: Yb(NO3)3
Molecular weight: 359.05 g
Oxide %: 54.9
Toxicity LD 50.PO: (rat) 3100 mg/kg
Dehydrated Oxalate
Formula *: Yb2(C2O4)3
Molecular weight: 610.14 g
Oxide %: 64.6
Anhydrous sulfate
Formula *: Yb2(SO4)3
Molecular weight: 634.25 g
Oxide %: 62.15
* theoretic data
| Isotope |
Demi-vie |
Yb-168
|
Stable |
Yb-169
|
32.03 days |
Yb-170
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Stable |
Yb-171
|
Stable |
Yb-172
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Stable |
| Yb-173 |
Stable |
| Yb-174 |
Stable |
| Yb-175 |
4.19 days |
| Yb-176 |
Stable |
Date of discovery: 1878
Discoverer: Jena de Marignac
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Markets and applications
Applications:
Metallurgical and chemical experiments
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