NIST Physical Measurement Laboratory Handbook of Basic Atomic Spectroscopic Data

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Homepage - IntroductionFinding listSelect element by name.Select element by atomic number.Select element from periodic tableFrancium Atomic DataFrancium Strong LinesFrancium Neutral Atom Persistent Lines Francium Neutral Atom Energy LevelsFrancium Singly Ionized Persistent LinesFrancium Singly Ionized Energy LevelsFrancium References
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Energy Levels of Neutral Francium ( Fr I )

Configuration   Term   J     Level(cm-1) Ref.


7s              2S     1/2       0.000   ABDJ90
 
7p              2P°    1/2   12237.409   ABDJ90
                       3/2   13923.998   ABDJ90
 
8p              2P°    1/2   23112.960   ABDJ90
                       3/2   23658.306   ABDJ90
 
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Fr II (1S0)     Limit        32848.872   ABDJ90

Homepage - IntroductionFinding listSelect element by name.Select element by atomic number.Select element from periodic tableFrancium Atomic DataFrancium Strong LinesFrancium Neutral Atom Persistent Lines Francium Neutral Atom Energy LevelsFrancium Singly Ionized Persistent LinesFrancium Singly Ionized Energy LevelsFrancium References
Switch to Formatted Version