Berkelium is a chemical element, doesn't contain other compounds.
Berkelium has the electronegativity 1,3 in the L. Pauling scale; it is sufficiently reactive to react with the majority of other elements but the chemistry of Bk is not so studied because Bk is very rare. Compounds with oxygen, halogens, hydrogen, nitrogen, sulfur, arsenic, phosphorous, etc. are now known.
Berkelium itself is not explosive. It is a radioactive element that is primarily used for research purposes. However, combinations of berkelium with certain other elements could potentially result in explosive compounds.
berkelium is synthetic
berkelium is american
Berkelium is extremely rare, radioactive and unstable; berkelium is not for sale.
Berkelium and nobelium are members of the actinides group, solid metals, radioactive elements, unstable elements, artificial elements, very difficult to prepare extremely small quantities, only some compounds are known, etc.
Berkelium has the valences 3+ and 4+.
Berkelium has 97 electrons.
Berkelium has 97 electrons.
Berkelium is an artificial element.
We haven't berkelium in the body.
Berkelium is a metal.