Berkelium is an artificial element.
Yes, berkelium is a man-made element that was first synthesized in a laboratory. It is a radioactive element with the atomic number 97 and is not found naturally on Earth.
berkelium
The answer is Berkelium.
Berkelium
Berkelium is a solid metal, man made, radioactive, dense, without practical uses now, atomic number 97, chemical symbol Bk, etc.
Mendelevium is a man made chemical element.
It is a natural element.
Selenium is a natural element.
No it is not.
Lanthanum is a natural element.
Actinium is a natural chemical element, it is not a man-made element.
Argon is a natural element found in the air.