??同位素 有54個，其中只係得 ¹⁵³ Eu係穩定。

?有兩個非人造? 同位素 ，分別係 ¹⁵³ Eu同 ¹⁵¹ Eu，其餘?同位素都係非常?穩定，只係? 實驗室 製造過，???自然界出現。

圖表 [ 編輯 ]

備註： 有#?數據代表?經過實驗?證明，只係理論推測，而用?括號括係代表數據?確定。

參攷 [ 編輯 ]

• Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
• Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report) . Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005) .
• Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
  • Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties , Nuc. Phys. A 729, pp. 3-128 (2003).
  • National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
  • David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition , online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.