Periodic Table:

Element 105 - Dubnium / Dubnium

(Latin / English)

Mass Number

Atomic Mass

% Abundance

Nuclear Spin

255 *

0

?

256 *

256.1081

0

?

257 *

257.1079

0

?

258 *

258.1093

0

?

259 *

259.1097

0

?

260 *

260.1114

0

?

261 *

261.1121

0

?

262 *

262.1138

0

?

263 *

263.1153

0

?

(* = unstable isotope)

Electron Configuration:

[Rn] 5f14 6d3 7s2

Relative Atomic Mass:

262.11

State (25°C, 1 atm):

solid, metal

Density:

?

Melting Temperature:

?

Boiling Temperature:

?

© W. Bauer, 1999