Change: (Half(Half Life:Life: .5 ms) Rf - 257 (Half Life: 4.8 s) Rf - 258 (Half Life: 13 ms) Rf - 259 (Half Life: 3 s) Rf - 260 (Half Life: .3s) Rf - 261 (Half Life: 65s) Rf - 265 (Half Life: 13 h) My Electrons   View changes from previous version. (Word count: 516)

Change: electrons.electrons. My electron configuration is[Rn] 5f ^ 14 . 6d ^ 2 . 7s ^ 2 My Properties My atomic number is 104. My atomic mass is 261. My color is probably metallic and silvery white or gray in appearance. My state at room temperature is solid   View changes from previous version. (Word count: 516)

Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 516)

Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 492)

Change: Zirconium. Zirconium. My Compounds (My Friends!)Unfortunately, I don't have any friends. I do not form any compounds. My Story Only small amounts of me have ever been made. In 1964 in Dubna, Russia,   View changes from previous version. (Word count: 460)

Change: song was written by Tom Lehrer in 1959, but Rutherfordium was discovered 10 years later. But now, in 2006, Rutherfordium IS known by Harvard. Atomic Number: 104 Atomic Mass: 261   View changes from previous version. (Word count: 384)

Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 390)

Change: Element SongHere's a fun video. Not only does he sing the names of the elements, but there are also pictures. However, Rutherfordium is not included. In the last line he sings, "These are the only ones that   View changes from previous version. (Word count: 390)

Change:  Here's a fun video. Not only does he sing the names of the elements, but there are also pictures. However, Rutherfordium is not included. In   View changes from previous version. (Word count: 388)

Change:  Rutherford.Rutherford. My Jobs I have no uses known. However, my experimental finding was something new, something interesting. Even if I last for only a brief time, I have some significance. I can help theorists understand what really works in their theories. Atomic Number: 104 Atomic Mass: 261   View changes from previous version. (Word count: 298)