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actinide
(redirected from Actinides)

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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
 
The emphasis of this announcement is on the ions, complexes, and organometallic compounds of the transition metals known as lanthanides and actinides, post-transition metals, and metalloid elements.
Metals in medicine by Environmental Health Perspectives
The emphasis of this announcement is on the ions, complexes, and organometallic compounds of the transition metals known as lanthanides and actinides, post-transition metals, and metalloid elements.
Metals in medicine by Environmental Health Perspectives
Argonne's only Idaho nuclear program slated to survive is a facility being renovated to produce fuel rods containing actinides, which would test whether these heavy elements from spent fuel could be "burned" to yield power (SN: 3/20/93, p.
Fed's R&D goals change, no dollar gains by Raloff, Janet / Science News
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