What is Meitnerium?

Meitnerium, the one hundred-ninth element on the periodic table, is a synthetic, radioactive transition metal honoring a pioneering nuclear physicist.

Atomic Number: 109

Symbol: Mt

Atomic Mass: [278] u (most stable isotope)

Category: Transition Metal

State at Room Temperature: Solid

Discovered By: Peter Armbruster, Gottfried Münzenberg, et al. (1982)

⚛️ Atomic Structure of Meitnerium

Meitnerium has one hundred nine protons, one hundred sixty-nine neutrons (in its most stable isotope, Meitnerium-278), and one hundred nine electrons, with nine in its outer shell.

  • 🟢 Protons: 109
  • 🔴 Neutrons: 169 (Most stable isotope, Meitnerium-278)
  • 🟡 Electrons: 109

💡 Did you know? Meitnerium honors Lise Meitner, who co-discovered nuclear fission but was overlooked for a Nobel Prize!

🔬 Meitnerium Properties

Meitnerium is radioactive, likely silvery, and dense. Its melting point is unknown but expected to be high, and it emits alpha radiation.

🧪 How Was Meitnerium Discovered?

In 1982, Peter Armbruster, Gottfried Münzenberg, and a team at GSI in Darmstadt, Germany, synthesized Meitnerium by bombarding bismuth with iron ions.

⚡ Uses of Meitnerium

  • 🔬 Research: Studying superheavy element properties.
  • ⚡ Synthesis: Precursor to even heavier elements.

💡 Fun Facts About Meitnerium

  • 👩‍🔬 Named after Lise Meitner.
  • ⏳ Half-life of 7.6 seconds.
  • 🇩🇪 Discovered in Germany.
  • 🏭 Fully synthetic.

⚠️ Safety & Precautions

Meitnerium is radioactive and a radiation hazard. It's only produced in trace amounts in controlled labs.

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