If curium enters the body it accumulates in the bones, and is therefore very toxic as its radiation destroys the red-cell forming mechanism. Curium is a radioactive rare earth metal.
Curium is probably present in uranium ores.
It has a few specialised uses but only a few of its compounds are known. 113.1 46.3 Electronegativities Both values are quoted on the Pauling scale. The following CrystalMaker image represents the solid state structure. For most elements, the most stable allotrope is illustrated. 581 Isotopes This section gives some data for naturally occurring isotopes.