Dubnium is an artificial chemical element.
Lithium 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.
Dubnium is an artificial chemical element, very unstable.
Dubnium. It is a synthetic element that does not exist in the environment. It has no uses whatsoever.
Dubnium
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.
Dubnium is an artificial chemical element.
Dubnium has 105 protons.
Aluminium is a natural chemical element.
Boron is a natural chemical element.
Xenon is a natural chemical element.