Periodic Table:

Element 88 - Radium / Radium

(Latin / English)

Mass Number

Atomic Mass

% Abundance

Nuclear Spin

223 *

223.0185

few %

1/2+

224 *

224.0202

few %

0

226

226.0254

few %

0

228

228.0311

few %

0

(* = unstable isotope)

Electron Configuration:

[Rn] 7s2

Relative Atomic Mass:

226.03

State (25°C, 1 atm):

solid, metal

Density:

5500 kg/m3

Melting Temperature:

973 K

Boiling Temperature:

1413 K

© W. Bauer, 1999