Radium

Alkaline earth metal

Symbol: Ra

Atomic Number: 88

Standard State: Solid

Atomic Mass: 226.0254

Electron Configuration: [Rn]7s2

Electronegativity: 0.9

Atomic Radius: 283

Ionization Energy: 5.279

Melting Point: 973

Boiling Point: 1413

Density: 5

Year Discovered: 1898