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actinide

Wikipedia English The Free Encyclopedia

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Actinide
The actinide or actinoid (IUPAC nomenclature) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium.

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WordNet 2.0 Dictionary

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actinide

Noun
1. any of a series of radioactive elements with atomic numbers 89 through 103
(synonym) actinoid, actinon
(hypernym) group, grouping


Babylon French English dictionary

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actinide
nm. actinide, any of a series of radioactive elements with atomic numbers 89 through 103

Mineralogy Database Dictionary

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Actinides

General Chemistry Glossary

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actinide
Elements 89-102 are called actinides. Electrons added during the Aufbau construction of actinide atoms go into the 5f subshell. Actinides are unstable and undergo radioactive decay. The most common actinides on Earth are uranium and thorium.


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