Astatine (At)
Energy Levels of Neutral Astatine ( At I )
Configuration
Term
J
Level(cm
-1
)
Ref.
6
p
5
2
P°
3/2
0.0
M64a
6
p
4
(
3
P)7
s
4
P
5/2
44549.3 ?
M64a
3/2
46233.6 ?
M64a
At II (
3
P
2
)
Limit