Eegenskapen
|
|
Algemian
|
Nööm, Symbool, Numer
|
Baarium, Ba, 56
|
Seerie
|
Eerdalkaalimetal
|
Skööl, Periode, Blook
|
2, 6, s
|
Klöör, Skak
|
witj-grä metalen
|
CAS-Numer
|
7440-39-3
|
Uundial
|
0,026 %[1]
|
Atomaar [2]
|
Atoommase
|
137,327(7)[3] u
|
Atoomraadius (bereegent)
|
215 (253) pm
|
Kovalent-Raadius
|
215 pm
|
Van der Waals-Raadius
|
268[4] pm
|
Elektroonen
|
[Xe] 6s2
|
Energii
|
2,7 eV[5]
|
1. Ionisiarang
|
502,9 kJ/mol
|
2. Ionisiarang
|
965,2 kJ/mol
|
Füsikaalisk [2]
|
Tustant
|
fääst
|
Kristal
|
kuubisk
|
Sachthaid
|
3,62 g/cm3 (20 °C)[6] bei 293 K
|
Hardhaid
|
1,25
|
Magnetismus
|
paramagneetisk (Χm = 6,8 · 10−6)[7]
|
Smoltponkt
|
1000 K (727 °C)
|
Köögponkt
|
1910 K[8] K (1637 °C)
|
Molaar Rüm
|
38,16 · 10−6 m3/mol
|
Dampwaremk
|
149 kJ/mol[8] kJ/mol
|
Smoltwaremk
|
8,0 kJ/mol
|
Faard faan a tuun
|
1620 m/s
|
Elektrisk struumfeerang
|
2,94 · 106 A/(V · m)
|
Waremkfeerang
|
18 W/(m · K)
|
Cheemisk [2]
|
Oksidatsionstustant
|
+2
|
Oksiiden
|
BaO
|
Sür of baasisk
|
basisch
|
Normoolpotentiaal
|
−2,92 V (Ba2+ + 2 e− → Ba)
|
Elektronegatiwiteet
|
0,89 (Pauling-Skala)
|
Isotoopen
|
Isotoop
|
NH
|
t1/2
|
Aktiwiteet
|
Energii (MeV)
|
Produkt
| 128Ba |
{syn.}
| 2,43 d | ε | 0,521 | 128Cs |
129Ba |
{syn.}
| 2,23 h | ε | 2,433 | 129Cs |
130Ba |
0,106 %
|
stabiil |
131Ba |
{syn.}
| 11,50 d | ε | 1,370 | 131Cs |
132Ba |
0,101 %
|
stabiil |
133Ba |
{syn.}
| 10,51 a | ε | 0,517 | 133Cs |
134Ba |
2,417 %
|
stabiil |
135Ba |
6,592 %
|
stabiil |
136Ba |
7,854 %
|
stabiil |
137Ba |
11,23 %
|
stabiil |
138Ba |
71,7 %
|
stabiil |
139Ba |
{syn.}
| 83,06 min | β− | 2,317 | 139La |
140Ba |
{syn.}
| 12,752 d | β− | 1,047 | 140La |
|
Muar isotoopen bi List faan isotoopen
|
NMR-Eegenskapen
|
|
Seekerhaid
|
|
Miast wurd SI-ianhaiden brükt.
|
Baarium (faan greks βαρύς barýs: „swaar“) as en cheemisk element mä det ufkörtang Ba an det atoomnumer 56. Hat as en grä eerdalkaalimetal an reagiaret stark mä loft.
-
SIMS-spektrum faan a
isotoopen.
-
Elektroonenskel
-
Rian baarium
-
Bariit
- ↑ 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 (Barium) .
- ↑ 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, Berlin 2005, ISBN 3-11-017485-5, S. 361.
- ↑ Norman N. Greenwood, Alan 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. In: Journal of Chemical & Engineering Data. 56, 2011, S. 328–337, doi:10.1021/je1011086.
- ↑ 9,0 9,1 Iindraanj tu Barium uun't GESTIS-dootenbeenk faan't IFA, ufrepen di 29. April 2017 (mä JavaScript).