| Ordnungszahl: |
36 |
| Name: |
Krypton |
| Namensursprung: |
Greek: kryptos (hidden). |
| Entdeckung: |
1898 by Sir William Ramsey, M.W. Travers in Great Britain |
| Beschreibung: |
Colorless, odorless, tasteless rare noble gas. |
| Vorkommen: |
Forms 1 millionth of the atmosphere. Obtained from production of liquid air. |
| Verwendung: |
Used in lighting products. Some is used as inert filler-gas in incandescent bulbs. Some is mixed with argon in fluorescent lamps. The most important use is in flashing stroboscopic lamps that outline airport runways. |
| Gruppe: |
Noble Gas |
| Atomgewicht: |
83.80 |
| Schmelzpunkt: |
-156.6°C |
| Siedepunkt: |
-152.3°C |
| Dichte bei 293 K: |
0.003708 g/cm³ |
| Aggregatszustand bei Raumtemperatur: |
Gas |
| Schalen: |
2,8,18,8 |
| Orbitale: |
[Ar] 3d10 4s2 4p6 |
| Valenzen: |
0 |
| 1. Ionisierungs- potential: |
13.9996 V |
| 2. Ionisierungs- potential: |
24.359 V |
| 3. Ionisierungs- potential: |
36.95 V |
| Atomradius: |
1.03 Å |
| Spezifische Wärme: |
0.248 J/gK |
| Verdampfungswärme: |
9.029 kJ/mol |
| Schmelzwärme: |
1.638 kJ/mol |
| Thermischer Ausdehnungskoeffizient: |
425 10-6 K-1 |
| Röntgenemission Energie / Wellenlänge: |
| |
KA |
KB |
LA |
LB |
MA |
MB |
|
|
|
| eV |
12633.1 |
14113.3 |
1586.1 |
1636.56 |
0 |
0 |
|
|
|
| Å |
0.98143 |
0.8785 |
7.817 |
7.57598 |
0 |
0 |
|
|
|
|
| Röntgenabsorption Energie / Wellenlänge: |
| |
K |
L-I |
L-II |
L-III |
M-I |
M-II |
M-III |
M-IV |
M-V |
| eV |
14326 |
1921 |
1728 |
1675 |
0 |
0 |
0 |
95.04 |
93.83 |
| Å |
0.86545 |
6.45421 |
7.17508 |
7.40211 |
0 |
0 |
0 |
130.456 |
132.138 |
|
| Röntgen Fluoreszenz Ausbeute: |
| |
KA |
KB |
LA |
LB |
MA |
MB |
|
|
|
| |
64.6% |
0% |
1.9% |
0% |
0% |
0% |
|
|
|
|
| Nuklide: |
| |
Anteil |
Gewicht |
Spin |
Halbwertszeit |
Zerfallsmodus |
| Kr78 |
0.35% |
77.9204 |
0 |
|
Stable |
| Kr79 |
0% |
79 |
1/2 |
1.45d |
EC,β+ |
| Kr80 |
2.27% |
79.9164 |
0 |
|
Stable |
| Kr81 |
0% |
80.917 |
7/2 |
2.1E05y |
EC |
| Kr82 |
11.56% |
81.9135 |
0 |
|
Stable |
| Kr83 |
11.55% |
82.9141 |
9/2 |
|
Stable |
| Kr83m |
0% |
83 |
1/2 |
1.86h |
IT |
| Kr84 |
56.9% |
83.9115 |
0 |
|
Stable |
| Kr85 |
0% |
84.913 |
9/2 |
10.73y |
β- |
| Kr85m |
0% |
85 |
1/2 |
4.48h |
β-,IT |
| Kr86 |
17.37% |
85.9106 |
0 |
|
Stable |
| Kr87 |
0% |
87 |
5/2 |
1.27h |
β- |
| Kr88 |
0% |
88 |
0 |
2.84h |
β- |
| Kr89 |
0% |
89 |
0 |
3.15m |
β- |
| Kr90 |
0% |
90 |
0 |
32.3s |
β-,β- |
|
