actinide

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Related to Actinide element: Actinoid series elements
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Synonyms for actinide

any of a series of radioactive elements with atomic numbers 89 through 103

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References in periodicals archive ?
Vaseline glass is mildly radioactive, a property shared by all of the actinide elements, but the mystery element was banned for use as a coloring agent in the 1940s.
Name that element! It's the world's most powerful element, fueling both nuclear weapons and power plants. Our mystery element is softer than steel, denser than lead, and has existed for more than 6.6 billion years--longer than Earth itself. Can you name it? For help, grab a periodic table and follow these eight clues. Then turn the page to test your "element IQ." (Physical science: chemistry)
It's the first-ever compound containing both a noble gas and one of the periodic table's so-called actinide elements.
Noble gases and uranium get cozy. (Chemistry)
Several years later theorists predicted that lighter elements, such as dysprosium and other rare earths, could also assume a relatively stable, superdeformed shape if they were rapidly rotated; the rotational energy would play the same role as Coloumb interactions in the actinide elements.
Superdeformed nuclei go for a spin; physicists are head over heels about rapidly rotating, superdeformed nuclei
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