• Name:Roentgenium
  • Symbol: Rg
  • Atomic Number : 111
  • Atomic Mass : 281amu
  • Melting Point : unknown
  • Boiling Point : unknown
  • Number of Protons/Electrons : 111
  • Classification: Transition Metal
  • Crystal Structure : unknown
  • Density @ 293 K: unknown
  • Color:unknown