Polonium is a natural chemical element but can be also obtained artificially.
Polonium is a natural chemical element but can also be prepared artificially.
Polonium is a natural radioactive element.
Natural polonium exist in uranium or thorium ores.
Natural polonium exist in uranium and thorium ores.
Polonium is a natural chemical element, but Po can also be prepared artificially.
Polonium is a radio-active trans-uranic element. It is a metal.
No. Polonium is a natural product of radioactive dacay.
Polonium is a solid, man-made, radioactive poor metal.
Polonium is a solid.
Polonium is a natural radioactive element.
Radium and polonium are radioactive natural chemical elements.
Natural polonium exist in uranium or thorium ores.
Natural polonium exist in uranium and thorium ores.
Natural polonium exist in uranium and thorium ores.
It is natural but there are man-made imitations.
Polonium is a natural chemical element, but Po can also be prepared artificially.
It can be made from natural or man made fibres.
Polonium is a radio-active trans-uranic element. It is a metal.