The Elements Table

The Interactive Periodic Table of Elements

  • 34 Se Selenium 78.96
  • 34 Se Selenium 78.96
  • 34 Se Selenium 78.96
  • Vital Element Stats

  • Name: Selenium
  • Symbol: Se
  • Weight: 78.96
  • Family: Non-Metals
  • Group: 34
  • Period: 958
  • Composition

  • Electrons: 34
  • Protons: 34
  • Neutrons: ~45
  • Measurements

  • Density: 4.79 g/mL
  • Miscellaneous Facts

  • Discovered: 1823
  • Melting Point: 494 o C , 921.2 o F , 767.15 o Kelvin
  • Boiling Point: 958 o C , 1756.4 o F , 1231.15 o Kelvin
  • Cost: N/A