Actinium Properties, Molecular Formula, Applications - WorldOfChemicals

Actinium Properties




Actinium is a radioactive chemical element, which was discovered in 1899. It was the first non-primordial radioactive element to be isolated. It has no significant industrial use. Its current applications include a neutron source and an agent for radiation therapy targeting cancer cells in the body.

Chemical Properties

Appearance Silvery Solid
Atomic Number 89
Atomic Weight 227 g/mol
Block f
Boiling Point 3198 °C
CAS Number 7440-34-8
Crystal Structure Face-Centered Cubic
Density 10 g/cm3
Electron Configuration 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2 4d10 5p6 4f14 5d10 6s2 6p6 6d1 7s2
Ionization Energy 499 KJ/mol
Melting Point 1050 °C
Oxidation State 3
Period 7
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