出典:Wiktionary
lawrencium (uncountable)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/12 11:16 UTC 版)
Lawrencium ( /ləˈrɛnsiəm/ lə-ren-see-əm) is a radioactive synthetic chemical element with the symbol Lr and atomic number 103. In the periodic table of the elements, it is a period 7 d-block element and the last element of actinide series. Chemistry experiments have confirmed that lawrencium behaves as the heavier homologue to lutetium and is chemically similar to other actinides.