Berkelium is on the Periodic Table. If it's on the periodic table, it's an element.
Berkelium is an artificial element.
Berkelium is a chemical element, not first or second.
Berkelium is an artificial element.
Berkelium is not a commercial product.
We haven't berkelium in the body.
The atomic number of berkelium is 97.
Berkelium is only an artificial element.
Berkelium is an artificial chemical element.
Berkelium is a chemical element, doesn't contain other compounds.
Berkelium is a unique chemical element.
Berkelium is an artificial element, radioactive, unstable, solid, metal, atomic number 97 etc.
The electron configuration of berkelium is [Rn]5f97s2.