Here is a brief description of polonium. Polonium has more isotopes than any other element, all of which are radioactive. Polonium dissolves readily in dilute acids, but is only slightly soluble in alkalis. Polonium has been found in tobacco as a contaminant and in uranium ores. Here is a brief summary of the isolation of polonium.
Polonium is radioactive and excessivley rare in nature.
It is made in very small qunatities through a nuclear reaction of bismuth.