The most common reaction to obtain polonium is;
Bi-209 + n------------Bi-210-----------------Po-210 + e-
In the past polonium was obtained from the residues of uranium ores, after extraction of uranium.Now polonium is obtained only by nuclear reactions.
Polonium is not found freely in nature. It is a radioactive element that is typically produced in nuclear reactors or through the decay of uranium. It can also be synthesized in particle accelerators. Due to its high radioactivity, obtaining and handling polonium requires specialized equipment and procedures.
The first time polonium was obtained by Marie and Pierre Curie in 1898, separating polonium from uranium ores. Now polonium is obtained by nuclear reactions.
Today polonium is obtained only artificially, especially in Russia.
Now polonium is not obtained from natural sources; it is the product of some nuclear reactions.
Polonium is a radioactive chemical element, extremely rare, accompanying uranium in some ores; now polonium is obtained by nuclear reactions.
Natural polonium was isolated from residues resulted after the extraction of uranium from ores; the process is long and tedious. Today polonium is obtained artificially.
Polonium is a naturally occurring element that can be found in trace amounts in certain minerals and soils. It can also be artificially produced in nuclear reactors or through the decay of heavier elements.
Polonium exist in traces in uranium and thorium ores.
The isotope lead-204 is obtained.
Polonium is a nonrenewable resource. It is a rare and naturally occurring radioactive element that is not replenished on a human timescale. Its availability is limited, and it must be extracted from uranium ores.
Polonium doesn't contain another element.