RaZ =  88



Radium
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
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