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 LinesFrancium 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. 
              
7s2S1/2     0.000ABDJ90
     
7p2P°1/2 12237.409ABDJ90
  3/2 13923.998ABDJ90
     
8p2P°1/2 23112.960ABDJ90
  3/2 23658.306ABDJ90
     
Fr II (1S0)Limit  32848.872ABDJ90
     


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