TERMIUM Plus®

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Filter results by subject field Alphabetical list of terms

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Alphabetical list of terms

Record 1 2001-09-11

English

Subject field(s)
  • Chemistry
  • Atomic Physics
DEF

A synthetic radioactive element produced in a cyclotron by bombarding einsteinium 253 with alpha particles.

OBS

The element is named for D.I. Mendeleev. At the time of discovery (1955), only 17 atoms of it were prepared and identified. Mendelevium 255 decays by spontaneous fission with a half-life of about 30 minutes ... atomic number 101 ...

French

Domaine(s)
  • Chimie
  • Physique atomique
DEF

Élément radioactif non rencontré dans la nature et faisant partie du groupe des actinides.

OBS

Il est produit dans un cyclotron en bombardant l'einsteinium 253 avec des particules alpha. Numéro atomique 101, nombre de masse de l'isotope le plus stable 253.

Spanish

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