NIST Physical Measurement Laboratory Handbook of Basic Atomic Spectroscopic Data

[skip navigation] National Institute of Standards and Technology NIST Physical Measurement Laboratory Beryllium (Be) 

Homepage - IntroductionFinding listSelect element by name.Select element by atomic number.Select element from periodic tableBeryllium Atomic DataBeryllium Strong LinesBeryllium Neutral Atom Persistent Lines Beryllium Neutral Atom Energy LevelsBeryllium Singly Ionized Persistent LinesBeryllium Singly Ionized Energy LevelsBeryllium References
Switch to Formatted Version

Atomic Data for Beryllium (Be)

Atomic Number = 4

Atomic Weight = 9.01218

Reference E95


Isotope   Mass       Abundance Spin Mag Moment

 9Be      9.012182   100%      3/2  -1.1776
10Be      10.013534  Trace     0    

 
Be I  Ground State 1s22s2  1S0
      Ionization energy  75192.64 cm-1 (9.32270 eV)   Ref. KM97
 
Be II Ground State 1s22s  2S1/2
      Ionization energy  146882.8 cm-1 (18.21114 eV)   Ref. KM00