Definition of Radioactinium. Meaning of Radioactinium. Synonyms of Radioactinium
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Definition of Radioactinium
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- Actinium is a chemical element; it has symbol Ac and atomic number 89. It was firstisolated by FriedrichOskarGiesel in 1902, who gave it the name emanium;... - potentiometer, also known as a Resistive Digital-to-Analog ConverterRadioactinium, abbreviated RdAc, a name given at one time to 227 Th, an isotope of... - an isotope of poloniumidentified in the decaychain of radium. RdAc Radioactinium 90 Name given at one time to 227Th, an isotope of thorium. RdTh Radiothorium... - had a very short half-life (it is about 300 ns). He also identifiedradioactinium (thorium-227) and radium D (later identified as lead-210). Rutherford... - 0249037(48) 30.70(3) min α 222Ra 0+ CD (<3.2×10−12%) 208Pb 18O 227Th Radioactinium 90 137 227.0277025(22) 18.693(4) d α 223Ra (1/2+) Trace 228Th Radiothorium... - Actinium β− 98.62% α 1.38% 21.772 a 0.045 5.042 227Th 223Fr 227Th RdAc Radioactinium α 18.68 d 6.147 223Ra 223Fr AcK Actinium K β− 99.994% α 0.006% 22.00... - (1944-01-31). "Sur l'intensité absolue des raies de conversioninterne du radioactinium". Comptesrendushebdomadaires des séances de l'Académie des sciences...
