Apedia

Radium Ra Rn 7s Fr Ac Ubn

Z 88
Symbol Ra
Name Radium
Group 2
Period 7
Atomic mass Scalar [226]
Density Scalar 5500
Melting point Scalar 973.15
Boiling point Scalar 2010
Electronegativity Scalar 0.9
Abundance <0.001
Ionisation energy Scalar 5.2784
Atomic radius Scalar 215
Electron configuration [Rn] 7s2
Left neighbor Fr
Right Neighbor Ac
Bottom neighbor (Ubn?)
German name Radium

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