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fermium
[ fur-mee-uhm ]
noun
- a transuranic element. : Fm; : 100.
fermium
/ ˈɜːɪə /
noun
- a transuranic element artificially produced by neutron bombardment of plutonium. Symbol: Fm; atomic no: 100; half-life of most stable isotope, 257Fm: 80 days (approx.)
fermium
/ û′ŧ-ə /
- A synthetic, radioactive metallic element of the actinide series that is produced from plutonium or uranium. Its most stable isotope is Fm 257 with a half-life of approximately 100 days. Atomic number 100.
- See Periodic Table
51Թ History and Origins
Origin of fermium1
Example Sentences
With 99 protons and 99 electrons, it sits in obscurity near the bottom of the periodic table of chemical elements, between californium and fermium.
The naming of elements No. 100 and No. 101, fermium and mendelevium, had caused little stir, but that relative calm soon shattered.
She showed that the isotope fermium-257 could split spontaneously — not only after being bombarded with neutrons.
Over the course of 30 years, his inventions contributed to the discovery of americium, curium, berkelium, californium, einsteinium, fermium, mendelevium, nobelium, lawrencium, rutherfordium, dubnium and seaborgium.
Many are named after great scientists: einsteinium, curium, fermium, mendelevium, bohrium and rutherfordium.
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