Atomic Number: 90

Name: Thorium

Atomic symbol: Th

Atomic Weight: 232.038

Electron configuration: 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f¹⁴5d¹⁰6s²6p⁶6d²7s²

Melting Point: 1750^oC

Boiling Point: 4790^oC

Ionic Radius: 1.02 angstroms (+4)