Dubnium

105 rutherfordiumdubniumseaborgium
Ta

Db

(Upp)
Katrangan Umum Unsur
Jeneng, Lambang, Nomer atom dubnium, Db, 105
Dhèrèt kimia transition metals
Golongan, Période, Blok 5, 7, d
Rupa unknown, probably silvery
white or metallic gray
Massa atom [268] g/mol
Konfigurasi elektron [Rn] 5f14 6d3 7s2
Cacahing èlèktron saben kulit 2, 8, 18, 32, 32, 11, 2
Ciri-ciri fisik
Fase presumably a solid
Massa jenis (watara suhu kamar) unknown g/cm³
Ciri-ciri atom
Struktur kristal unknown
Bilangan oksidasi 5
Jari-jari atom (terhitung) unknown pm
Jari-jari kovalen unknown pm
Lain-lain
Nomor CAS 53850-35-4
Isotop
iso NA waktu paruh DM DE (MeV) DP
268Db syn 29 h[butuh sitiran] SF
ε ? 268Rf
267Db syn 1.2 h SF
266Db syn 22 m ε 266Rf
263Db syn 27 s 56% SF
41% α 8.36 259Lr
3% ε 263mRf
262Db syn 34 s 67% α 8.66,8.45 258Lr
33% SF
261Db syn 1.8 s α 8.93 257Lr
260Db syn 1.5 s α 9.13,9.08,9.05 256Lr
259Db syn 0.5 s α 9.47 255Lr
258Db syn 4.4 s 67% α 9.17,9.08,9.01 254Lr
33% ε 258Rf
257mDb syn 0.76 s α 9.16 253Lr
257gDb syn 1.50 s α 9.07,8.97 253Lr
256Db syn 1.6 s 70% α 9.12,9.08,9.01,8.89 253Lr
30% ε 256Rf
Referensi

Dubnium (uniné /ˈduːbniəm/) iku unsur kimia sajeroning tabel périodik kanthi simbul Db lan nomer atom 105.



Dubnium

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