The most important isotope - Es-253, has a half life of 20,47 days.
The longest half life is for the isotope Es-252: 471,7 days.
But einsteinium has 19 isotopes and 3 isomers, each with a different half life.
Iridium, Einsteinium
Impossible to touch einsteinium - it is very radioactive !
Einsteinium is not explosive.
Einsteinium has no odor.
The electronic configuration of einsteinium is: [Rn]5f11.7s2.
Iridium, Einsteinium
Impossible to touch einsteinium - it is very radioactive !
Einsteinium is not flammable.
Einsteinium is a metal.
Einsteinium is not corrosive.
Einsteinium (atomic number 99) has no practical uses, because it exists only in tiny amounts created artificially in reactors and cyclotrons. Currently this is about 1 milligram per year. The half-life of the most stable isotope 252Es is only 472 days, and the common 253Es only 20.47 days.
Since Einsteinium is a radioactive element with a very short half-life, it doesn't really stay around long enough for its chemical properties to be noticed, however, like all very heavy elements it is a highly reactive metal, during the brief period that it exists prior to radioactive decay.
The symbol for Einsteinium is Es
Einsteinium is not for sale.
The appearance of einsteinium is silvery.
Einsteinium is not flammable.
Einsteinium is not explosive.