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Ytterbium, 70Yb |
| Ytterbium |
|---|
| Pronunciation | (ih-TUR-bee-əm) |
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| Appearance | sillery white |
|---|
| Standard atomic weight Ar, std(Yb) | 7002173045000000000♠173.045(10)[1] |
|---|
| Ytterbium in the periodic cairt |
|---|
|
|
| Atomic nummer (Z) | 70 |
|---|
| Group | group n/a |
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| Period | period 6 |
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| Block | f-block |
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| Element category | Lanthanide |
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| Electron confeeguration | [Xe] 4f14 6s2 |
|---|
| Electrons per shell | 2, 8, 18, 32, 8, 2 |
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| Pheesical properties |
|---|
| Phase at STP | solit |
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| Meltin pynt | 1097 K (824 °C, 1515 °F) |
|---|
| Bylin pynt | 1469 K (1196 °C, 2185 °F) |
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| Density (near r.t.) | 6.90 g/cm3 |
|---|
| when liquid (at m.p.) | 6.21 g/cm3 |
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| Heat o fusion | 7.66 kJ/mol |
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| Heat o vapourisation | 159 kJ/mol |
|---|
| Molar heat capacity | 26.74 J/(mol·K) |
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Vapour pressur
| P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
|
| at T (K)
|
736
|
813
|
910
|
1047
|
(1266)
|
(1465)
|
|
| Atomic properties |
|---|
| Oxidation states | +1, +2, +3 (a basic oxide) |
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| Electronegativity | Pauling scale: ? 1.1 |
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| Atomic radius | empirical: 176 pm |
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| Covalent radius | 187±8 pm |
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 Colour lines in a spectral rangeSpectral lines o ytterbium |
| Ither properties |
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| Naitural occurrence | primordial |
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| Creestal structur | face-centred cubic (fcc) |
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| Speed o soond thin rod | 1590 m/s (at 20 °C) |
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| Thermal expansion | (r.t.) (β, poly) 26.3 µm/(m·K) |
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| Thermal conductivity | 38.5 W/(m·K) |
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| Electrical resistivity | (r.t.) (β, poly) 0.250 µ Ω·m |
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| Magnetic orderin | paramagnetic |
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| Young's modulus | (β form) 23.9 GPa |
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| Shear modulus | (β form) 9.9 GPa |
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| Bulk modulus | (β form) 30.5 GPa |
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| Poisson ratio | (β form) 0.207 |
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| Vickers haurdness | 206 MPa |
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| Brinell haurdness | 343 MPa |
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| CAS Nummer | 7440-64-4 |
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| History |
|---|
| Diskivery | Jean Charles Galissard de Marignac (1878) |
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| First isolation | Georges Urbain (1907) |
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| Main isotopes o ytterbium |
|---|
|
|
| Decay modes in parentheses are predictit, but hae nae yet been observed |
| | references |
| style="text-align:left"|
|
|
|
in
|
calc from C
|
diff
|
report
|
ref
|
| C
|
824
|
—
|
—
|
|
|
| K
|
1097
|
1097
|
0
|
|
|
| F
|
1515
|
1515
|
0
|
|
|
| WD
|
String Module Error: Target string is empty ! 
|
|
|
|
| input
|
C: 824, K: 1097, F: 1515
|
| comment
|
|
| style="text-align:left"|
|
|
|
in
|
calc from C
|
diff
|
report
|
ref
|
| C
|
1196
|
—
|
—
|
|
|
| K
|
1469
|
1469
|
0
|
|
|
| F
|
2185
|
2185
|
0
|
|
|
| WD
|
String Module Error: Target string is empty !
|
|
|
|
| input
|
C: 1196, K: 1469, F: 2185
|
| comment
|
|
References
Thir references will appear in the airticle, but this list appears anerly on this page.
- ↑ Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
