Samarium

Lanthanide

Symbol: Sm

Atomic Number: 62

Standard State: Solid

Atomic Mass: 150.4

Electron Configuration: [Xe]6s2 4f6

Electronegativity: 1.17

Atomic Radius: 229

Ionization Energy: 5.644

Melting Point: 1347

Boiling Point: 2067

Density: 7.52

Year Discovered: 1879