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californium    
n. 卡

卡

californium
n 1: a radioactive transuranic element; discovered by bombarding
curium with alpha particles [synonym: {californium}, {Cf},
{atomic number 98}]

californium
Symbol: Cf
Atomic number: 98
Atomic weight: (249)
Radioactive metallic transuranic element. Belongs to actinoid series.
Cf-251 has a half life of about 700 years. Nine isotopes are known.
Cf-252 is an intense {neutron} source, which makes it an intense
{neutron} source and gives it a use in {neutron} activation analysis
and a possible use as a radiation source in medicine. First produced
by Glenn T. Seaborg and associates in 1950.

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  • Californium - Wikipedia
    Californium is a synthetic chemical element; it has symbol Cf and atomic number 98 It was first synthesized in 1950 at Lawrence Berkeley National Laboratory (then the University of California Radiation Laboratory) by bombarding curium with alpha particles (helium-4 ions)
  • Californium Facts - Symbol Cf or Atomic Number 98
    Californium is a synthetic radioactive element with the symbol Cf and atomic number 98 It is part of the actinide series and is one of the heaviest elements produced in significant amounts
  • Californium | Radioactive, Synthetic, Actinide | Britannica
    californium (Cf), synthetic chemical element of the actinoid series of the periodic table, atomic number 98
  • Californium - Element information, properties and uses | Periodic Table
    Californium has no known biological role It is toxic due to its radioactivity Californium did not exist in weighable amounts until ten years after its discovery It is prepared, in milligram amounts only, by the neutron bombardment of plutonium-239
  • Facts About Californium - Live Science
    Californium is a synthetic, radioactive element not found in nature It is an actinide: one of 15 radioactive, metallic elements found at the bottom of the periodic table
  • Understanding Californium: Characteristics, Uses, and Safety Concerns
    Californium is a rare, valuable element renowned for its neutron emission capabilities Since its discovery in 1950, it has played crucial roles in energy, healthcare, and resource identification
  • Californium Element | Uses, Facts, Physical Chemical Characteristics
    Californium is a radioactive element and was synthesized for the first time in 1950 It is used to produce other heavier elements, such as oganesson It is highly radioactive and requires proper handling to avoid hazardous health effects
  • Californium Facts, Symbol, Discovery, Properties, Uses
    A radioactive metal, californium (pronounced as kal-eh-FOR-nee-em) belongs to the family of actinides and denoted by the chemical symbol Cf [1] It undergoes reactions when heated with hydrogen, nitrogen, and halogens [3] It has 20 isotopes out of which californium-251 has a half-life of 900 years [1, 3]
  • Californium: Properties, Uses, and Facts - The Comprehensive Guide
    Discover everything you need to know about Californium, a highly radioactive actinide element with the atomic number 98 Learn about its history, physical and chemical properties, industrial uses, potential medical applications, safety measures, and more in this comprehensive guide
  • Californium: The Human-Made Element Worth Millions
    Californium, a human-made element that doesn’t exist naturally on Earth, is one of the most valuable and rare materials in the world This shiny, silver-white metal, identified as element 98 on the periodic table, commands an extraordinary price—around $27 million per gram





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