Barium Bb

Multi tool use
Multi tool use
SIMS Massenspektrum fon do Isotope
Oainskuppe
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
[Xe]6s2
56
Ba
Periodensystem . . . . . . . . . . Klik ap sun litje Blok foar n uur Element
Algemeen
Noome, Symbol, Oardnengstaal Barium, Ba, 56
Serie Äidalkalimetalle
Gruppe, Periode, Blok 2, 6, s
Uutsjoon wiet-gries metallisk
Massenandeel an ju Äidhülle 0,03 %
Atomar
Atommasse 137,327 u
Atomradius (bereekend) 215 (253) pm
Kovalenten Radius 198 pm
Van-der-Waals-Radius - pm
Elektronekonfiguration [Xe]6s2
Elektrone pro Energieniveau 2, 8, 18, 18, 8, 2
Uuttreedoarbaid 2,52 eV
1. Ionisierungsenergie 502,9 kJ/mol
2. Ionisierungsenergie 965,2 kJ/mol
Physikalisk
Aggregoattoustand fest
Modifikationen ?
Kristallstruktuur kubisk-ruumzentrierd
Tichte 3,62 g/cm3 bei 293 K
Mohshädde 1,25
Magnetismus paramagnetisk
Smiltpunkt 1000 K (727 °C)
Sjoodepunkt 1913 K (1640 °C)
Molar Volumen 38,16 · 10-6 m3/mol
Ferdampengswaarmte 142 kJ/mol
Smiltwaarmte 7,75 kJ/mol
Dampdruk 98 Pa bei 371 K
Skalgauegaid 1620 m/s
Spezifiske Waarmtekapazität 204 J/(kg · K)
Elektriske Laitfäiegaid 3 · 106 S/m
Waarmtelaitfäiegaid 18,4 W/(m · K)
Chemisk
Oxidationstoustande +2
Oxide (Basizität) BaO (basisk)
Normoalpotentioal -2,912 V
(Ba2+ + 2e- → Ba)
Elektronegativität 0,89 (Pauling-Skala)
Isotope
Isotop NH t1/2 ZM ZE MeV ZP
128Ba

{syn.}

2,43 d ε 0,521 128Cs
129Ba

{syn.}

2,23 h ε 2,433 129Cs
130Ba

0,106 %

Stabil
131Ba

{syn.}

11,50 d ε 1,370 131Cs
132Ba

0,101 %

Stabil
133Ba

{syn.}

10,51 y ε 0,517 133Cs
134Ba

2,417 %

Stabil
135Ba

6,592 %

Stabil
136Ba

7,854 %

Stabil
137Ba

11,23 %

Stabil
138Ba

71,7 %

Stabil
139Ba

{syn.}

83,06 min β- 2,317 139La
140Ba

{syn.}

12,752 d β- 1,047 140La
NMR-Oainskuppe
  Spin γ in
rad·T−1·s−1 		E fL bei
B = 4,7 T
in MHz
135Ba 3/2+ 19,9
137Ba 3/2 22,2
Sicherhaidswaiwiesengen
Gefoarstofkänteekenge
Reedelk stikboar
F
Leichtent-
zündlich
Raitsjend
Xi
Raitsjend
[1]
R- und S-Sätze R: Foarloage:R-Sätze[1]
S: Foarloage:S-Sätze[1]
Sowied muugelk un gebruukelk, wäide SI-Eenhaide ferwoand.
Wan nit uurs fermäärkt, jäilde do anroate Doaten bie Standoardbedingengen.

Barium is n Äidalkalimetall.

Wiki letter w.svg
 Dissen Artikkel is n Stump.

Hälp jädden deeran mee, dät tou ferbeeterjen.


Wällen[Beoarbaidje | Quelltext bearbeiten]

  1. ↑ 1,0 1,1 1,2 Sicherheitsdatenblatt (alfa-aesar) für Barium-Stücke (teilweise abweichende R-/S-Sätze für andere Formen)
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