Actinium [+]Compare [E]dit [H]istory

Aliases: Ac

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Object «Actinium» has attributes

Attribute Value
Symbol Ac
Standard state Solid
Atomic mass 227.02775 u
Electron configuration [Rn]7s²6d¹
Oxidation states
  • +3
Electronegativity (pauling scale) 1.1
Atomic radius (van der waals) 260 pm
Ionization energy 5.17 eV
Melting point 1324 K
Boiling point 3471 K
Density 10.07 g/cm³
Atomic number 89
Group name Actinide
Discovered 1899 year
Electron affinity Add

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There was one edit, no edits waiting approval. Last edited by fink.isabella(301), Jun 1, 2022 (18 fields were changed)
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