Eegenskapen
|
|
Algemian
|
Nööm, Symbool, Numer
|
Strontsium, Sr, 38
|
Seerie
|
Eerdalkaalimetal
|
Skööl, Periode, Blook
|
2, 5, s
|
Klöör, Skak
|
salwern witj
|
CAS-Numer
|
7440-24-6
|
Uundial
|
0,014 %[1]
|
Atomaar [2]
|
Atoommase
|
87,62(1)[3] u
|
Atoomraadius (bereegent)
|
200 (219) pm
|
Kovalent-Raadius
|
195 pm
|
Van der Waals-Raadius
|
249[4] pm
|
Elektroonen
|
[Kr] 5s2
|
Energii
|
2,59 eV[5]
|
1. Ionisiarang
|
549,5 kJ/mol
|
2. Ionisiarang
|
1064,2 kJ/mol
|
Füsikaalisk [2]
|
Tustant
|
fest
|
Kristal
|
kuubisk
|
Sachthaid
|
2,63 g/cm3 (20 °C)[6]
|
Hardhaid
|
1,5
|
Magnetismus
|
paramagneetisk (Χm = 3,5 · 10−5)[7]
|
Smoltponkt
|
1050 K (777 °C)
|
Köögponkt
|
1653 K[8] K (1380 °C)
|
Molaar Rüm
|
33,94 · 10−6 m3/mol
|
Dampwaremk
|
141 kJ/mol[8] kJ/mol
|
Smoltwaremk
|
8 kJ/mol
|
Elektrisk struumfeerang
|
7,41 · 106 A/(V · m)
|
Waremkfeerang
|
35 W/(m · K)
|
Cheemisk [2]
|
Oksidatsionstustant
|
+2
|
Oksiiden
|
SrO
|
Sür of baasisk
|
stark baasisk
|
Normoolpotentiaal
|
−2,89 V (Sr2+ + 2 e− → Sr)
|
Elektronegatiwiteet
|
0,95 (Pauling-Skala)
|
Isotoopen
|
Isotoop
|
NH
|
t1/2
|
Aktiwiteet
|
Energii (MeV)
|
Produkt
| 82Sr |
{syn.}
| 25,55 d | ε | 0,180 | 82Rb |
83Sr |
{syn.}
| 32,41 h | ε | 2,276 | 83Rb |
84Sr |
0,56 %
|
stabiil |
85Sr |
{syn.}
| 64,84 d | ε | 1,065 | 85Rb |
86Sr |
9,86 %
|
stabiil |
87Sr |
7,00 %
|
stabiil |
88Sr |
82,58 %
|
stabiil |
89Sr |
{syn.}
| 50,53 d | β− | 1,497 | 89Y |
90Sr |
{syn.}
| 28,78 a | β− | 0,546 | 90Y |
|
Muar isotoopen bi List faan isotoopen
|
NMR-Eegenskapen
|
|
Seekerhaid
|
|
Miast wurd SI-ianhaiden brükt.
|
Strontsium as en cheemisk element mä det ufkörtang Sr an det atoomnumer 38. Hat as en eerdalkaalimetal.
- ↑ Harry H. Binder: Lexikon der chemischen Elemente. S. Hirzel Verlag, Stuttgart 1999, ISBN 3-7776-0736-3.
- ↑ A taalen för't infobox kem miast faan www.webelements.com (Strontium) .
- ↑ CIAAW, Standard Atomic Weights Revised 2013.
- ↑ Manjeera Mantina, Adam C. Chamberlin, Rosendo Valero, Christopher J. Cramer, Donald G. Truhlar: Consistent van der Waals Radii for the Whole Main Group. Uun: J. Phys. Chem. A. 113, 2009, S. 5806–5812, doi:10.1021/jp8111556.
- ↑ Ludwig Bergmann, Clemens Schaefer, Rainer Kassing: Lehrbuch der Experimentalphysik. Band 6: Festkörper. 2. aplaag. Walter de Gruyter, 2005, ISBN 3-11-017485-5, S. 361.
- ↑ N. N. Greenwood, A. Earnshaw: Chemie der Elemente. 1. aplaag. VCH, Weinheim 1988, ISBN 3-527-26169-9, S. 136.
- ↑ Robert C. Weast (Hrsg.): CRC Handbook of Chemistry and Physics. CRC (Chemical Rubber Publishing Company), Boca Raton 1990, ISBN 0-8493-0470-9, S. E-129 bit E-145. Wäärser diar uun g/mol an uun cgs-ianhaiden. Amreegent tu SI-wäärs.
- ↑ 8,0 8,1 Yiming Zhang, Julian R. G. Evans, Shoufeng Yang: Corrected Values for Boiling Points and Enthalpies of Vaporization of Elements in Handbooks. Uun: Journal of Chemical & Engineering Data. 56, 2011, S. 328–337, doi:10.1021/je1011086.
- ↑ 9,0 9,1 Iindraanj tu Strontium uun't GESTIS-dootenbeenk faan't IFA, ufrepen di 30. April 2017 (mä JavaScript).