Neither.
Argon is naturally occurring noble gas
radioactive and artificial
Plutonium and xenon are radioactive elements. Plutonium is a synthetic element, while xenon occurs naturally but can also be produced synthetically. Barium and cesium are not synthetic elements but can have radioactive isotopes.
Argon is a noble gas, and thus it is not present in minerals. It is found in Earth's atmosphere in trace amounts and is also produced through the decay of radioactive materials.
Argon is formed through the radioactive decay of potassium-40 in the Earth's crust. Potassium-40 undergoes a series of decay reactions, ultimately producing argon-40 as a stable end product. This process occurs over millions of years and is responsible for the presence of argon in the Earth's atmosphere.
Bohrium is a synthetic radioactive element. It does not exist in nature.
Over 99.999% of argon is not radioactive. A trace of radioactive argon-39 can be found in nature, but it is not significant. Synthetic radioactive isotopes of argon exist, as they do for all elements.
Argon is a gas. It is not synthetic.
no
Most argon is made by radioactive decay of potassium-40.
Most argon is made by radioactive decay of potassium-40.
There are over twenty known isotopes of argon. Of these all but three are radioactive and decay. Of naturally occurring argon, very nearly 100% is not radioactive, with only traces of one radioactive isotope found.
Radon is a noble gas and is radioactive. All of the other noble gasses have at least some synthetic radioactive isotopes. Radioactive isotopes of both krypton and argon exist in nature in trace quantities.
All of the actinides are radioactive, and almost all are synthetic.
Plutonium is a synthetic element that is radioactive. It does not occur naturally in nature and must be artificially produced through the nuclear fission of uranium.
Darmstadtium is a synthetic radioactive element. It does not exist in nature.
Yes, nobelium is an artificial element and radioactive.
Rutherfordium is not found in nature. It is a radioactive synthetic element.