أكتينيوم: الفرق بين النسختين

'''الأكتينيوم''' هو [[عنصر كيميائي]] من عناصر [[جدول دوري|الجدول الدوري]] وله الرمز '''Ac''' و[[رقم ذري|العدد الذري]] 89.<ref>[https://books.google.com/books?id=F9V3a-0V3r8C&pg=PA289 ''Solid state physics: advances in research and applications'']. Academic Press. {{ISBN|0-12-607716-9}} pp. 289–291</ref><ref>{{cite journal |doi=10.1021/ja01158a034 |last1=Fried |date=1950 |first1=Sherman |pages=771–775 |volume=72 |journal=Journal of the American Chemical Society |last2=Hagemann |first2=French |last3=Zachariasen |first3=W. H. |title=The Preparation and Identification of Some Pure Actinium Compounds |issue=2}}</ref><ref>{{cite journal |title = Sur l'actinium |first = André-Louis |last = Debierne |journal = Comptes rendus |volume = 139 |pages = 538–540 |date = 1904 |language=French}}</ref>