Francium

[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.