Element 117 independently “created” by a group from GSI, who was able to reproduce previous results using Ca on Bk (Berkelium!). It is off course unstable and its decay time is “relatively long”, in the tens of milliseconds range 😉
Element 117 independently “created” by a group from GSI, who was able to reproduce previous results using Ca on Bk (Berkelium!). It is off course unstable and its decay time is “relatively long”, in the tens of milliseconds range 😉