89 - Actinium (Ac)  information about the ground-state, ionization energy, and atomic weight data
Atomic Weight: [227]
Ionization Energy:  eV
Ground-state Level:
Ground-state Configuration:

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Atomic Spectroscopic Data information on Atomic Spectroscopic Data
 Atomic Spectra Database-Lines Ground States and Ionization Energies Handbook of Basic Atomic Spectroscopic Data X-Ray Transition Energies Database
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 Atomic Transition Probability Bibliographic Database Atomic Spectral Line Broadening Bibliographic Database Atomic Energy Levels and Spectra Bibliographic Database
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 Atom Ref Data for Electronic Structure Calcs

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