Yb
Ytterbium
YTTERBIUM
TRANSITION ELEMENT: LANTHANIDE
| Atomic number: | 70 |
| Group numbers: | 3 |
| Period: | 6 |
| Electronic configuration: | [Xe] 4f14 6s2 |
| Formal oxidation number: | +2 +3 |
| Electronegativities: | - |
| Atomic radius / pm: | 194 |
| Relative atomic mass: | 173.054(5) |
Ytterbium was discovered by Jean Charles Galinard de Marignac (CH) in 1878. Named after Ytterby, a village in Sweden. It is a silvery, lustrous, malleable and ductile metal that oxidizes slowly in air and reacts with water. Ytterbium dust is flammable. Ytterbium is found in minerals such as yttria, monazite, gadolinite and xenotime. It is used in metallurgical and chemical experiments. The price of 99.9 % pure ytterbium ingot is 188.50 € for 25 g.
| Density / g dm-3: | 6965 | (293 K) |
| Molar volume / cm3mol-1: | 24.84 | (293 K) |
| Electrical resistivity / µΩcm: | 29 | (20 °C) |
| Thermal conductivity / W m-1K-1: | 34.9 |
| Melting point / °C: | 819 |
| Boiling point / °C: | 1196 |
| Heat of fusion / kJ mol-1: | 9.2 |
| Heat of vaporization / kJ mol-1: | 159 |
| Heat of atomization / kJ mol-1: | 152.8 |
| First ionization energy / kJ mol-1: | 603.44 |
| Second ionization energy / kJ mol-1: | 1174.82 |
| Third ionization energy / kJ mol-1: | 2416.97 |
| in the atmosphere / ppm: | - |
| in the Earth's crust / ppm: | 2.2 |
| in the oceans / ppm: | 0.0000002 |
| Crystal structure: | face-centered cubic |
| Unit-cell dimensions / pm: | a=548.62 |
| Space group: | Fm3m |
| Isotope | Relative atomic mass | Mass percent (%) |
|---|---|---|
| 168Yb | 167.933894(5) | 0.13(1) |
| 170Yb | 169.934759(3) | 3.05(6) |
| 171Yb | 170.936322(3) | 14.3(2) |
| 172Yb | 171.936378(3) | 21.9(3) |
| 173Yb | 172.938207(3) | 16.12(21) |
| 174Yb | 173.938858(3) | 31.8(4) |
| 176Yb | 175.942568(3) | 12.7(2) |
| Balanced half-reaction | Eo / V | |
|---|---|---|
| 69 Thulium | ← | 70 Ytterbium | → | 71 Lutetium |
Citing this page:
Generalic, Eni. "Ytterbium." EniG. Periodic Table of the Elements. KTF-Split, 13 Feb. 2025. Web. {Date of access}. <https://www.periodni.com/yb.html>.
Copyright © 1998-2025 by Eni Generalic. All rights reserved. | Bibliography | Disclaimer