Francium - реферат по английскому языку

 

Тезисы:

  • [4] All isotopes of francium decay into either astatine, radium, or radon.
  • [4] Francium is also less stable than all synthetic elements up to element 105.
  • Francium is an alkali metal whose chemical properties most resemble those of caesium.
  • [10] [11] Nearly all francium salts are water-soluble.
  • Due to its instability and rarity, there are no commercial applications for francium.
  • [21] Perey then suggested francium, after France.
  • [15] It is also calculated that there is at most 30 g of francium in the earth's crust at any time.
  • The francium is then injected into a glass bulb.
  • Initially, about 1000 francium atoms were trapped in the experiment.
  • This was the very first time that anyone had ever seen francium.
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