actinide series


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Related to actinide series: lanthanide series
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Words related to actinide series

(chemistry) a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium

References in periodicals archive ?
These isotopes have half-lives 100 to 500 times longer than predicted by theory--sufficiently long to permit detailed studies of the chemical properties of lawrencium, the last member of the actinide series.
In both the Lanthanide and Actinide series, the d shells that fill after the f shells are primes, explaining why only these d shells (beginning with Z = 71 for Lanthanide and Z = 103 for Actinide) are filled with primes because they would normally be f shells in the sequence if we looked strictly at observed spectroscopic data.
Highlights: - It uses 12 columns instead of 18 - It re-draws the line between metals and non-metals - It emphasizes the strength of the 4+ elements (temperature, organic chemistry) - It does not classify the 5+, 6+, 7+, 8+ metals into groups V, VI, VII, and VIII (or IUPAC 5, 6, 7, 8) - It uses the vertical and horizontal of the page to displace elements in a new way - It incorporates the Lanthanide and Actinide Series elements