| Ordnungszahl: |
49 |
| Name: |
Indium |
| Namensursprung: |
Latin: indicum (color indigo), the color it shows in a spectroscope. |
| Entdeckung: |
1863 by Ferdinand Reich, T. Richter in Germany |
| Beschreibung: |
Rare, very soft, silver-white metal |
| Vorkommen: |
Found in certain zinc ores. |
| Verwendung: |
Used to coat high speed bearings and as an alloy that lowers the melting point of other metals. Relativly small amounts are used in dental items and in electronic semiconductors. |
| Gruppe: |
Metal |
| Atomgewicht: |
114.818 |
| Schmelzpunkt: |
156.61°C |
| Siedepunkt: |
2080°C |
| Dichte bei 293 K: |
7.31 g/cm³ |
| Aggregatszustand bei Raumtemperatur: |
Solid |
| Schalen: |
2,8,18,18,3 |
| Orbitale: |
[Kr] 4d10 5s2 5p1 |
| Valenzen: |
1,2,3 |
| 1. Ionisierungs- potential: |
5.7864 V |
| 2. Ionisierungs- potential: |
18.869 V |
| 3. Ionisierungs- potential: |
28.03 V |
| Atomradius: |
2.00 Å |
| Spezifische Wärme: |
0.23 J/gK |
| Verdampfungswärme: |
231.50 kJ/mol |
| Schmelzwärme: |
3.263 kJ/mol |
| Thermischer Ausdehnungskoeffizient: |
32.1 10-6 K-1 |
| Röntgenemission Energie / Wellenlänge: |
| |
KA |
KB |
LA |
LB |
MA |
MB |
|
|
|
| eV |
24140.9 |
27277.1 |
3287.06 |
3487.33 |
0 |
0 |
|
|
|
| Å |
0.51359 |
0.45454 |
3.77192 |
3.55531 |
0 |
0 |
|
|
|
|
| Röntgenabsorption Energie / Wellenlänge: |
| |
K |
L-I |
L-II |
L-III |
M-I |
M-II |
M-III |
M-IV |
M-V |
| eV |
27940 |
4238 |
3938 |
3731 |
0 |
0 |
0 |
0 |
443 |
| Å |
0.44375 |
2.92556 |
3.14844 |
3.32311 |
0 |
0 |
0 |
0 |
27.9877 |
|
| Röntgen Fluoreszenz Ausbeute: |
| |
KA |
KB |
LA |
LB |
MA |
MB |
|
|
|
| |
85% |
0% |
7.5% |
0% |
0% |
0% |
|
|
|
|
| Nuklide: |
| |
Anteil |
Gewicht |
Spin |
Halbwertszeit |
Zerfallsmodus |
| In111 |
0% |
111 |
9/2 |
2.8049d |
EC |
| In113 |
4.28% |
112.904 |
9/2 |
|
Stable |
| In113m |
0% |
113 |
1/2 |
1.658h |
IT |
| In114 |
0% |
114 |
1 |
1.198m |
β-,EC,β+ |
| In114m |
0% |
114 |
0 |
49.51d |
IT,EC |
| In115 |
95.72% |
114.904 |
9/2 |
4.4E14y |
β- |
| In115m |
0% |
115 |
1/2 |
4.486h |
IT,β- |
| In116 |
0% |
116 |
1 |
14.1s |
β- |
| In116m |
0% |
116 |
5 |
54.2m |
β- |
| In117 |
0% |
117 |
9/2 |
44m |
β-,β- |
| In117m |
0% |
117 |
1/2 |
1.94h |
β-,IT |
|
