# Strontium

SIMS Massenspektrum fon do Isotope

| Oainskuppe |
| --- |
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[Kr]5s2
38
Sr
Periodensystem . . . . . . . . . . Klik ap sun litje Blok foar n uur Element |

 |
| Algemeen |
| Noome, Symbol, Oardnengstaal | Strontium, Sr, 38 |
| Serie | Äidalkalimetalle |
| Gruppe, Periode, Blok | 2, 5, s |
| Uutsjoon | säälwersk wiet metallisk |
| Massenandeel an ju Äidhülle | 0,01 % |
| Atomar |
| Atommasse | 87,62 u |
| Atomradius (bereekend) | 219 () pm |
| Kovalenten Radius | 192 pm |
| Elektronekonfiguration | [Kr]5s2 |
| Elektrone pro Energieniveau | 2, 8, 18, 8, 2 |
| 1. Ionisierungsenergie | 549,5 kJ/mol |
| 2. Ionisierungsenergie | 1064,2 kJ/mol |
| Physikalisk |
| Aggregoattoustand | fest |
| Modifikationen | - |
| Kristallstruktuur | kubisk flächenzentrierd |
| Tichte | 2,63 g/cm3 |
| Mohshädde | 1,5 |
| Magnetismus | paramagnetisk |
| Smiltpunkt | 1050 K (777 °C) |
| Sjoodepunkt | 1655 K (1382 °C) |
| Molar Volumen | 33,94 · 10-6 m3/mol |
| Ferdampengswaarmte | 144 kJ/mol |
| Smiltwaarmte | 8,3 kJ/mol |
| Dampdruk | 246 Pa bei 1042 K |
| Spezifiske Waarmtekapazität | 300 J/(kg · K) |
| Elektriske Laitfäiegaid | 7,62 · 106 S/m |
| Waarmtelaitfäiegaid | 35,3 W/(m · K) |
| Chemisk |
| Oxidationstoustande | 2 |
| Oxide (Basizität) | SrO (stäärk basisk) |
| Normoalpotentioal | -2,89 V (Sr2+ + 2e- → Sr) |
| Elektronegativität | 0,95 (Pauling-Skala) |
| Isotope |
|

| Isotop | NH | t1/2 | ZM | ZE MeV | ZP |
| --- | --- | --- | --- | --- | --- |
| 82Sr |
{syn.}
 |  25,55 d  | ε | 0,180 | 82Rb |
| 83Sr |
{syn.}
 |  32,41 h  | ε | 2,276 | 83Rb |
| 84Sr |
0,56 %
 |  Stabil |
| 85Sr |
{syn.}
 |  64,84 d  | ε | 1,065 | 85Rb |
| 86Sr |
9,86 %
 |  Stabil |
| 87Sr |
7,00 %
 |  Stabil |
| 88Sr | **82,58** %
 |  Stabil |
| 89Sr |
{syn.}
 |  50,53 d  | β- | 1,497 | 89Y |
| 90Sr |
{syn.}
 |  28,78 a  | β- | 0,546 | 90Y |

 |
| NMR-Oainskuppe |
|

|   | Spin | γ in rad·T−1·s−1 | E | fL bei B = 4,7 T in MHz |
| --- | --- | --- | --- | --- |
| **87Sr** | -9/2 | 1,159 · 107 | 0,00269 | 8,67 |

 |
| Sicherhaidswaiwiesengen |
| Gefoarstofkänteekenge |
|

|  |
| --- |
|
 F Leichtent- zündlich |

 |
| R- und S-Sätze | R: Foarloage:R-Sätze |
| S: Foarloage:S-Sätze |
| Sowied muugelk un gebruukelk, wäide SI-Eenhaide ferwoand. Wan nit uurs fermäärkt, jäilde do anroate Doaten bie Standoardbedingengen. |

**Strontium** is n chemisk Element in ju periodiske Tabelle mäd dät Symbol **Sr** un Atomtaal 38. Strontium is n Äidalkalimetal mäd ne säälwerwiete of jeelske Faawe, wät chemisk gjucht reaktiv is. Dät Metal ferjeelt, wan dät de Luft uutsät is. Et kumt fon Natuur foar in do Mineralien Coelestin un Strontianit. Ju 90Sr Isotop is fertreeden in radioaktiv Atommul un häd ne Hoolichwäidstid fon 28.90 Jiere.

## Wällen