deuterium
isotope of hydrogen with 1 neutron
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Summary
deuterium is a stable isotope[1]. deuterium ranks in the top 2% of stable isotope entities by monthly Wikipedia readership (8,427 views/month).[2]
Key Facts
- Discoverer or inventor: Harold Urey[3]
- Instance of: isotope of hydrogen[4]
- Follows: protium[5]
- Followed by: tritium[6]
- Element symbol: D[7]
- Subclass of: hydrogen[8], boson[9], simple substance[10]
- Part of: period 1[11]
- Commons category: Deuterium[12]
- Time of discovery or invention: January 1, 1931[13]
- Topic's main category: Category:Deuterium[14]
- Atomic number: 1[15]
- Spin quantum number: 1[16]
- Parity quantum number: 1[17]
- Neutron number: 1[18]
- Described by source: Armenian Soviet Encyclopedia, vol. 3[19]
- Different from: Deuter[20], Deuterium[21]
- Isomeric SMILES: [2H][22]
- Mass: 2.01410177811 dalton[23]
- Melting point: -254.43 °C[24]
- Boiling point: -249.58 °C[25]
- Antiparticle: antideuterium[26]
- Binding energy: 2,224,520 electronvolt[27], 2224.566 kiloelectronvolt[28]
- Mass excess: 13135.72176 kiloelectronvolt[29]
- Natural abundance: 0.000115[30]
Why It Matters
deuterium has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[31] deuterium is known by 115 alternative names across languages and contexts.[32]