RaZ =  88

From the Latin "radius", meaning "ray"
(AM) Atomic Mass 226.0254  amu    Oxidation States +2
   (BP) Boiling Point 1140  °C    (MP) Melting Point 700  °C
   (ρ) Density 5  g/cm3    Crystal Structure Body Centered Cubic
   ( χ ) Electronegativity 0.9    (AR) Atomic Radius n/a
   Physical State Solid (C) Heat Capacity n/a
Electronic-Config [Rn]  7s2     (I1) First Ionization E 509.34  kJ/mol
   (ΔHvap) Heat of Vaporization 113  kJ/mol     (ΔHfus) Heat of Fusion 8.5  kJ/mol
   Year of Discovery 1898    Location of Discovery France
(E°) Standard Potential Ra2+⇔ Ra (-2.800 V)
Stable isotopes None. All natural isotopes are radioactive
Discovered/Synthesized by Marie Sklodowska Curie, Pierre Curie
Natural Source The mineral/ore uraninite
Common Uses Luminous watches, medical radon production, radiography
Other Info Discovered by Pierre and Marie Curie Was used in luminous watch dials
Previous Element
Next Element
Back to Table
Common Properties
Home Page