actinium

How To Use actinium In A Sentence

• An element discovered in 1982 has been named meitnerium to honor Lise Meitner (1878-1968), the Austrian-Swedish physicist and mathematician who discovered the element protactinium and made major contributions to the understanding of nuclear fission. Elements
• Along the way, these disintegration series produce radioactive isotopes of protactinium, thorium, actinium, radium, francium, radon, astatine, polonium, bismuth, lead, thallium and mercury.
• Along the way, these disintegration series produce radioactive isotopes of protactinium, thorium, actinium, radium, francium, radon, astatine, polonium, bismuth, lead, thallium and mercury.
• All isotopes of protactinium are radioactive.
• With Ramsay's consent, Hahn had taken with him the radiothorium he separated from samples of barium chloride and the actinium that he and a collaborator had earlier proved to be identical to the new element that the German chemist Friedrich Giesel had named emanium. Trafficking Materials and Gendered Experimental Practices: Radium Research in Early 20th Century Vienna
• A protactinium - 234 atom has 91 protons and 143 neutrons.
• Hahn's radiothorium and actinium salts also followed him to Emil Fischer's laboratory in Berlin. 30 Trafficking Materials and Gendered Experimental Practices: Radium Research in Early 20th Century Vienna
• Actinides - the radioactive chemical elements that span from actinium to lawrencium on the periodic table - have generated a great deal of interest in recent years.
• Actinide: Any of the series of 15 consecutive chemical elements in the periodic table from actinium to lawrencium (atomic numbers 89-103).
• Actinides - the radioactive chemical elements that span from actinium to lawrencium on the periodic table - have generated a great deal of interest in recent years.