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Actinium mass number range

Presently. 24 isotopes of actinium, with mass numbers ranging from 207 to 2.30, have been identified. All are radioactive. One year after the discovery of polonium and radinm by the Curies, A. Debierne found an unidentified radioactive substance in the residue after treatment of pitchblende. Debierne named the new material actinium after the Greek word for ray. F. Giesel, independently in 1902, also found a radioactive material in the rare-earth extracts of pitchblende. He named... [Pg.26]

Actinium Ac 89 artificial isotopes only mass number range 224-229... [Pg.875]

See other pages where Actinium mass number range is mentioned: [Pg.1059]    [Pg.34]    [Pg.43]    [Pg.15]    [Pg.1202]    [Pg.1259]    [Pg.1266]    [Pg.234]    [Pg.241]   
See also in sourсe #XX -- [ Pg.875 ]

See also in sourсe #XX -- [ Pg.1011 ]

See also in sourсe #XX -- [ Pg.1123 ]



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Actinium

Mass number

Mass range

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