| Ordnungszahl: |
82 |
| Name: |
Lead |
| Namensursprung: |
Anglo-Saxon: lead; symbol from Latin: plumbum. |
| Entdeckung: |
Known to the ancients. |
| Beschreibung: |
Very soft, highly malleable and ductile, blue-white shiny metal. |
| Vorkommen: |
Found most often in ores called galena or lead sulfide (PbS). Some is found in its native state. |
| Verwendung: |
Used in solder, shielding against radiation and in batteries. |
| Gruppe: |
Metal |
| Atomgewicht: |
207.2 |
| Schmelzpunkt: |
327.502°C |
| Siedepunkt: |
1740°C |
| Dichte bei 293 K: |
11.34 g/cm³ |
| Aggregatszustand bei Raumtemperatur: |
Solid |
| Schalen: |
2,8,18,32,18,4 |
| Orbitale: |
[Xe] 4f14 5d10 6s2 6p2 |
| Valenzen: |
2,4 |
| 1. Ionisierungs- potential: |
7.4167 V |
| 2. Ionisierungs- potential: |
15.028 V |
| 3. Ionisierungs- potential: |
31.943 V |
| Atomradius: |
1.81 Å |
| Spezifische Wärme: |
0.13 J/gK |
| Verdampfungswärme: |
177.70 kJ/mol |
| Schmelzwärme: |
4.799 kJ/mol |
| Thermischer Ausdehnungskoeffizient: |
28.8 10-6 K-1 |
| Röntgenemission Energie / Wellenlänge: |
| |
KA |
KB |
LA |
LB |
MA |
MB |
|
|
|
| eV |
0 |
0 |
10551.9 |
12614.1 |
2345.54 |
2442.58 |
|
|
|
| Å |
0 |
0 |
1.17501 |
0.98291 |
5.28601 |
5.076 |
|
|
|
|
| Röntgenabsorption Energie / Wellenlänge: |
| |
K |
L-I |
L-II |
L-III |
M-I |
M-II |
M-III |
M-IV |
M-V |
| eV |
87999 |
15860 |
15119 |
13034 |
3851 |
3554 |
3067 |
2586 |
2484 |
| Å |
0.14089 |
0.78174 |
0.82006 |
0.95124 |
3.21956 |
3.48862 |
4.04256 |
4.79449 |
4.99136 |
|
| Röntgen Fluoreszenz Ausbeute: |
| |
KA |
KB |
LA |
LB |
MA |
MB |
|
|
|
| |
96.8% |
0% |
38.6% |
0% |
0% |
0% |
|
|
|
|
| Nuklide: |
| |
Anteil |
Gewicht |
Spin |
Halbwertszeit |
Zerfallsmodus |
| Pb202 |
0% |
202 |
0 |
5.3E04y |
EC |
| Pb202m |
0% |
202 |
9 |
3.53h |
IT |
| Pb203 |
0% |
203 |
5/2 |
2.162d |
EC |
| Pb204 |
1.48% |
203.973 |
0 |
|
Stable |
| Pb204m |
0% |
204 |
9 |
1.12h |
IT |
| Pb205 |
0% |
205 |
5/2 |
1.5E07y |
EC |
| Pb206 |
23.6% |
205.974 |
0 |
|
Stable |
| Pb207 |
22.6% |
206.976 |
1/2 |
|
Stable |
| Pb208 |
52.3% |
207.977 |
0 |
|
Stable |
| Pb209 |
0% |
209 |
9/2 |
3.25h |
β- |
| Pb210 |
0% |
210 |
0 |
22.3y |
β-,α |
| Pb211 |
0% |
211 |
9/2 |
36.1m |
β- |
| Pb212 |
0% |
212 |
0 |
10.64h |
β- |
| Pb214 |
0% |
214 |
0 |
27m |
β- |
|
