• Name: Rutherfordium

  • Symbol: Rf

  • Number of Energy Levels: 7

  • Electrons on the outer energy level: 2

  • Atomic Number: 104

  • Atomic Mass: 267.0 Amu

  • Protons / Electrons: 104

  • Neutrons: 157

  • Density: 22.3 g/cm3

  • Classification: Transition Metal

Top 9 interesting facts about Rutherfordium

  • Rutherfordium was discovered in 1964 at Joint Institute for Nuclear Research. Rutherfordium was named after Ernest Rutherford.
  • Rutherfordium's melting point is predicted to be at 2100 C (2400 K, 3800 F) and its boiling point is predicted to be at 5500 C (5800 K, 9900 F).
  • Rutherfordium is a radioactive man-made element.
  • Rutherfordium is expected to be a solid under standard conditions.
  • Rutherfordium behaves as the heavier homologue to hafnium.
  • Rutherfordium has fifteen known isotopes which are not stable and not all isotopes have known half-lives.
  • Rutherfordium's isotope with the shortest known half-life is 253-Rutherfordium (under 50 μs).
  • Rutherfordium's isotope with the longest known half-life is 267-Rutherfordium (1.3 hours).
  • Rutherfordium's lighter isotopes have shorter half-lives while heavier isotopes have longer half-lives.