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Roentgenium Facts

Chemical & Physical Properties

By

Wilhelm Conrad Röntgen or Roentgen (1845-1923), discoverer of x-rays.

Wilhelm Conrad Röntgen or Roentgen (1845-1923), discoverer of x-rays.

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Periodic Table of the Elements

Roentgenium (Ununumium)

Atomic Number: 111

Symbol: Rg (Uuu)

Atomic Weight: [272]

Discovery: Hofmann, Ninov et al. GSI-Germany 1994

Element Classification: Transition Metal

Name Origin: Named in honor of Wilhelm Conrad Roentgen, discoverer of x-rays

Electron Configuration: [Rn] 5f14 6d10 7s1

References: Los Alamos National Laboratory (2001), Crescent Chemical Company (2001), Lange's Handbook of Chemistry (1952), CRC Handbook of Chemistry & Physics (18th Ed.)

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