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Fred Bayer | Rosenheim | Germany | (+49) 8031 86550 | fred@bayerf.de

88 – Ra – Radium

Ra The luminous paint contains traces of a radium salt. Amount: 50 mg, Radium fraction unknown.
Ra With long exposure time the shining can be photographed in the dark.

Physical and chemical data
Atomic mass226.0254
Density5.5 g·cm-3
Melting point700 °C
Boiling point1140 °C
Abundance1.00e-10 %
Electronegativy1
Oxydation levels2
Electron configuration[Rn]7s2

H   He
Li Be   B C N O F Ne
Na Mg   Al Si P S Cl Ar
K Ca Sc   Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
Rb Sr Y   Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg  
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