Ordnungszahl: |
70 |
Name: |
Ytterbium |
Namensursprung: |
Named for the Swedish village of Ytterby. |
Entdeckung: |
1878 by Jean de Marignac in Switzerland |
Beschreibung: |
Silvery, lustrous, malleable, and ductile metal. |
Vorkommen: |
Found in minerals such as yttria, monazite,
gadolinite, and xenotime. Monazite is often 50% rare earth by weight
and typically 0.03% ytterbium. |
Verwendung: |
Used in metallurgical and chemical experiments. |
Gruppe: |
Actinide Metal |
Atomgewicht: |
173.04 |
Schmelzpunkt: |
819°C |
Siedepunkt: |
1196°C |
Dichte bei 293 K: |
6.98 g/cm³ |
Aggregatszustand bei Raumtemperatur: |
Solid |
Schalen: |
2,8,18,32,8,2 |
Orbitale: |
[Xe] 4f14 6s2 |
Valenzen: |
2,3 |
1. Ionisierungs- potential: |
6.2542 V |
2. Ionisierungs- potential: |
12.188 V |
3. Ionisierungs- potential: |
25.03 V |
Atomradius: |
2.40 Å |
Spezifische Wärme: |
0.15 J/gK |
Verdampfungswärme: |
128.90 kJ/mol |
Schmelzwärme: |
7.660 kJ/mol |
Thermischer Ausdehnungskoeffizient: |
25.1 10-6 K-1 |
Röntgenemission Energie / Wellenlänge: |
|
KA |
KB |
LA |
LB |
MA |
MB |
|
|
|
eV |
0 |
0 |
7415.88 |
8402.09 |
1521.48 |
1567.65 |
|
|
|
Å |
0 |
0 |
1.67189 |
1.47565 |
8.149 |
7.909 |
|
|
|
|
Röntgenabsorption Energie / Wellenlänge: |
|
K |
L-I |
L-II |
L-III |
M-I |
M-II |
M-III |
M-IV |
M-V |
eV |
61329 |
10486 |
9978 |
8944 |
2398 |
2173 |
1950 |
1577 |
1528 |
Å |
0.20216 |
1.18239 |
1.24259 |
1.38624 |
5.17037 |
5.70572 |
6.35823 |
7.86211 |
8.11423 |
|
Röntgen Fluoreszenz Ausbeute: |
|
KA |
KB |
LA |
LB |
MA |
MB |
|
|
|
|
95% |
0% |
26.2% |
0% |
0% |
0% |
|
|
|
|
Nuklide: |
|
Anteil |
Gewicht |
Spin |
Halbwertszeit |
Zerfallsmodus |
Yb168 |
0.135% |
167.934 |
0 |
|
Stable |
Yb169 |
0% |
169 |
7/2 |
32.03d |
EC |
Yb170 |
3.03% |
169.935 |
0 |
|
Stable |
Yb171 |
14.31% |
170.937 |
1/2 |
|
Stable |
Yb172 |
21.82% |
171.937 |
0 |
|
Stable |
Yb173 |
16.13% |
172.938 |
5/2 |
|
Stable |
Yb174 |
31.84% |
173.939 |
0 |
|
Stable |
Yb175 |
0% |
175 |
7/2 |
4.19d |
β- |
Yb176 |
12.73% |
175.943 |
0 |
|
Stable | |