Promethium was identified and prepared for the first time in 1945, at Oak Ridge, USA by Jacob A. Marinsky, Lawrence E. Glendenin, Charles D.Coryell, Harold G. Richter.
Although promethium exist in traces in the Earth crust it is an artificial element.
Promethium is man made element.; the natural promethium is estimated to be less than 1 kg in the earth crust.
Promethium is paramagnetic.
Promethium is not flammbale.
Promethium bromide contain promethium and bromine.
Promethium is not flammable.
Promethium has no odor.
Promethium is not soluble in water.
Promethium is a metal.
Yes. Promethium is a solid.
Promethium is not flammable.
Promethium hasn't odor.