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102No259 u

Nobelium

actinide
Atomic Number
102
Atomic Mass
259 u
Period
7
Group
3

Quick Facts

PropertyValue
SymbolNo
Atomic Number102
Atomic Mass[259] u
CategoryActinide
Period7
Group3
Blockf
Electron Configuration[Rn] 5f¹⁴ 7s²

History and Discovery

Discovered by: Joint Institute for Nuclear Research (JINR) Year of Discovery: 1966 (confirmed) Location: Dubna, Russia

Etymology

Named after Alfred Nobel, inventor of dynamite and founder of the Nobel Prize.

Interesting Facts

  1. Named after Alfred Nobel
  2. Discovery was disputed between Soviet and US labs
  3. Last of the actinides
  4. Most stable isotope has only 58-minute half-life
  5. Can only be studied one atom at a time