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actinide
(redirected from Actinide elements)

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actinide

Any of a series of 15 radioactive metallic chemical elements with atomic numbers 89 (actinium) to 103 (lawrencium). Elements 89 to 95 occur in nature; the rest of the series are synthesized elements only. Actinides are grouped together because of their chemical similarities (for example, they are all bivalent), the properties differing only slightly with atomic number. The series is set out in a band in the periodic table of the elements, as are the lanthanides.



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? Mentioned in ? 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 ... by Dyer, Nicole / Science World
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) by Science News
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