Noun
a radioactive transuranic element synthesized from californium
Source: WordNetEleven isotopes of lawrencium are currently known; the most stable is 262 Lr with a half-life of 3.6 hours, but the shorter-lived 260 Lr (half-life 2.7 minutes) is most commonly used in chemistry because it can be produced on a larger scale. Source: Internet
All but one of the actinides are f-block elements, corresponding to the filling of the 5f electron shell ; lawrencium, a d-block element, is also generally considered an actinide. Source: Internet
Lutetium (Lu) and lawrencium (Lr) occupy the two positions below yttrium. Source: Internet
In 1971, the IUPAC granted the discovery of lawrencium to the Lawrence Berkeley Laboratory, even though they did not have ideal data for the element's existence. Source: Internet
It was found that lawrencium coextracted with the trivalent ions, but the short half-life of the 256 Lr isotope precluded a confirmation that it eluted ahead of Md 3+ in the elution sequence. Source: Internet
Chemical element number 103 was named lawrencium in his honor after its discovery at Berkeley in 1961. Source: Internet