Energy Levels of Neutral Astatine ( At I )

Configuration   Term   J     Level(cm-1) Ref.


6p5             2P°    3/2       0.0     M64a
 
6p4(3P)7s       4P     5/2   44549.3 ?   M64a
6p4(3P)7s       4P     3/2   46233.6 ?   M64a
 
At II (3P2)     Limit