Tantalum (Ta)
Atomic Data for Tantalum (Ta)
Atomic Number = 73
Atomic Weight = 180.9479
Reference
E95
Isotope
Mass
Abundance
Spin
Mag Moment
180
Ta
179.947462
0.012%
9
181
Ta
220.011368
99.998%
7/2
+2.370
Ta 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
4
f
1
4
5
s
2
5
p
6
5
d
3
6
s
2
4
F
3
/
2
Ionization energy 60891.4 cm
-1
(7.54957 eV) Ref.
SKJ94
Ta 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
4
f
1
4
5
s
2
5
p
6
5
d
3
6
s
5
F
1