Barium (Ba)
Atomic Data for Barium (Ba)
Atomic Number = 56
Atomic Weight = 137.327
Reference
E95
Isotope
Mass
Abundance
Spin
Mag Moment
130
Ba
129.906282
0.11%
0
132
Ba
131.905042
0.10%
0
134
Ba
133.904486
2.42%
0
135
Ba
134.905665
6.59%
3/2
+0.8365
136
Ba
135.904553
7.85%
0
137
Ba
136.905812
11.23%
3/2
+0.9357
138
Ba
137.905232
71.70%
0
Ba I Ground State 1
s
2
2
s
2
2
p
6
3
s
2
3
p
6
3
d
1
0
4
s
2
4
p
6
4
d
1
0
5
s
2
5
p
6
6
s
2
1
S
0
Ionization energy 42034.91 cm
-1
(5.211664 eV) Ref.
PVHA85
Ba II Ground State 1
s
2
2
s
2
2
p
6
3
s
2
3
p
6
3
d
1
0
4
s
2
4
p
6
4
d
1
0
5
s
2
5
p
6
6
s
2
S
1
/
2
Ionization energy 80686.30 cm
-1
(10.00383 eV) Ref.
KL99
