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Name: Meitnerium
Symbol: Mt
Number of Energy Levels: 7
Electrons on the outer energy level: 2
Atomic number: 109
Atomic Mass: 278.0 Amu (Atomic Mass Units) (predicted)
Protons/Electrons: 109
Neutrons: 157
Density: 37.4 g/cm3 (predicted)
Classification: Transition Metal

Meitnerium | Chemical elements

Meitnerium was discovered in 1982 at the research center GSI Helmholtz Centre for Heavy Ion Research. Meitnerium was named after Lise Meitner, an Austrian physicist who is a co-discoverer of protactinium and one of the discoverers of nuclear fission. Meitnerium’s melting and boiling points are unknown.

Top 8 interesting facts about Meitnerium

  1. Meitnerium is a synthetic element not found in nature.
  2. Meitnerium is very radioactive.
  3. Meitnerium is expected to be solid, paramagnetic, and very heavy under normal conditions.
  4. Meitnerium was first created in Germany in 1982.
  5. Meitnerium is believed to behave as the heavier homologue to iridium.
  6. Meitnerium has 15 known isotopes (not all confirmed) with atomic masses from 265 to 279.
  7. Meitnerium’s most stable isotope is meitnerium-278 and it has a half-life of 7.6 seconds.
  8. Meinterium is the only one element that might have the oxidation state +9.

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