Roentgenium | Penampilan |
---|
tak diketahui | Ciri-ciri umum |
---|
Nama, lambang, Nomor atom | roentgenium, Rg, 111 |
---|
Dibaca | /rʌntˈɡɛniəm/ runt-GEN-ee-əm or /rɛntˈɡɛniəm/ rent-GEN-ee-əm |
---|
Jenis unsur | tak diketahui |
---|
Catatan jenis | mungkin logam transisi |
---|
Golongan, periode, blok | 11, 7, d |
---|
Massa atom standar | [281] |
---|
Konfigurasi elektron | [Rn] 5f14 6d9 7s2 (predicted)[1] 2, 8, 18, 32, 32, 17, 2 (predicted)[1] |
---|
Sifat fisika |
---|
Fase | unknown |
---|
Sifat atom |
---|
Bilangan oksidasi | −1, +1, +3, +5[2] (a guess based on that of gold) |
---|
Jari-jari kovalen | 121 (estimated)[3] pm |
---|
Lain-lain |
---|
Nomor CAS | 54386-24-2 |
---|
Isotop paling stabil |
---|
Artikel utama: Isotop dari roentgenium | iso | NA | Waktu paruh | DM | DE (MeV) | DP |
---|
282Rg | syn | 0.5 s | α | 9.00 | 278Mt | 281Rg | syn | 26 s | SF | | | 280Rg | syn | 3.6 s | α | 9.75 | 276Mt | 279Rg | syn | 170 ms | α | 10.37 | 275Mt | 278Rg | syn | 4.2 ms | α | 10.69 | 274Mt | 274Rg | syn | 15 ms | α | 11.23 | 270Mt | 272Rg | syn | 1.6 ms | α | 11.02,10.82 | 268Mt |
| · r |
Roentgenium pronunciation (bantuan·info) (pengucapan /rɛntˈgɛniəm/, /rʌntˈdʒɛniəm/)[4] adalah unsur kimia sintetik dalam sistem periodik unsur yang memiliki lambang Rg dan nomor atom 111.
Referensi- ^ a b Turler, A. (2004). "Gas Phase Chemistry of Superheavy Elements". Journal of Nuclear and Radiochemical Sciences 5 (2): R19–R25.
- ^ Haire, Richard G. (2006). "Transactinides and the future elements". In Morss; Edelstein, Norman M.; Fuger, Jean. The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Dordrecht, The Netherlands: Springer Science+Business Media. p. 1674–75. ISBN 1-4020-3555-1.
- ^ Chemical Data. Roentgenium - Rg, Royal Chemical Society
- ^ Roentgenium - Definitions from Dictionary.com
Sumber : wiki.andrafarm.com, id.wikipedia.org, diskusi.biz, dsb. |