• Name:Selenium
  • Symbol: Se
  • Atomic Number : 34
  • Atomic Mass : 78.96amu
  • Melting Point : 493 K ? (220 oC)
  • Boiling Point : 958 K (685 oC)
  • Number of Protons/Electrons : 34
  • Classification: Other Non-Metal, Chalcogen
  • Crystal Structure : Hexagonal
  • Density @ 293 K: 4.79 g/cm3
  • Color:gray or red (crystalline), black or red (amorphous