Plutonium is an artificial element; natural plutonium exist only in extremely traces.
Plutonium is a radioactive chemical element; practically all plutonium is man made - in the nature plutonium is extremely rare.
Lithium is a natural chemical element.
Platinum is a metallic, solid, radioactive chemical element; now it is considered a natural element. Plutonium is a member of the actinides group.
Xenon is a natural chemical element.
Boron is a natural chemical element.
Yes, plutonium is an artificial element, man made.
Plutonium is a radioactive chemical element; practically all plutonium is man made - in the nature plutonium is extremely rare.
it is a natural element
Cadmium is a natural chemical element.
Lithium is a natural chemical element.
Yes
it is not natural it is a synthetic element.
Platinum is a metallic, solid, radioactive chemical element; now it is considered a natural element. Plutonium is a member of the actinides group.
Aluminium is a natural chemical element.
Boron is a natural chemical element.
Xenon is a natural chemical element.
Thorium is a natural chemical element, a radioactive metal.