Stable isotope Ytterbium (Yb)
Isotope | Z(p) | N(n) | Atomic Mass | Natural Abundance | Enrichment Level | Chemical Form |
---|---|---|---|---|---|---|
Yb-168 | 70 | 98 | 167.933895 | 0.13% | 35.00-87.00% | Oxide |
Yb-170 | 70 | 100 | 169.934758 | 3.05% | >70.00% | Oxide |
Yb-171 | 70 | 101 | 170.936323 | 14.30% | 95.00-97.50% | Oxide |
Yb-172 | 70 | 102 | 171.936378 | 21.90% | >98.00% | Oxide |
Yb-173 | 70 | 103 | 172.938207 | 16.12% | >92.00% | Oxide |
Yb-174 | 70 | 104 | 173.938858 | 31.80% | >99.00% | Oxide |
Yb-176 | 70 | 106 | 175.942569 | 12.70% | >99.60% | Oxide |
Properties of Ytterbium
Name | Ytterbium |
Symbol | Yb |
Atomic number | 70 |
Atomic weight | 173.04 |
Standard state | Solid at 298 ºK |
CAS Registry ID | 7440-64-4 |
Group in periodic table | N/A |
Group name | Lanthanoid |
Period in periodic table | 6 (Lanthanoid) |
Block in periodic table | f-block |
Color | Silvery white |
Classification | Metallic |
Melting point | 824 °C |
Boiling point | 1194 °C |
Vaporization point | 1194 °C |
Thermal conductivity | 34.9 W/(m·K) |
Electrical resistivity | 25.0 µΩ·cm at 25 ºC |
Electronegativity | 1.1 |
Specific heat | 0.3 kJ/kg K |
Heat of vaporization | 160 kJ·mol-1 |
Heat of fusion | 7.7 kJ·mol-1 |
Density of liquid | 6.21 g/cm3 at 824 °C |
Density of solid | 6.97 g/cm3 |
Electron configuration | [Xe]4f146s2 |
Atomic radius | 1.945 Å |
Ionic radius | Yb3+: 0.868 Å (coordination number 6) and 0.98 Å (coordination number 8) |
Oxidation states | +2, +3 |