It depends upon the isotope.
Here is a table for Polonium:
http://ie.lbl.gov/education/parent/Po_iso.htm
Polonium and radium are radioactive elements and toxic; they are dangerous.
yes, it is also very radioactive.
Polonium has 33 isotopes, more than any other element, of which all are radioactive.
No. Polonium is a solid at room temperature and is not chemically inert.
A radioactive element in period 6 of the periodic table is Polonium (Po). It is a highly radioactive metal with no stable isotopes. Its most stable isotope, Polonium-210, has a half-life of about 138 days.
Yes, radium and polonium are radioactive elements.
Polonium is extremely radioactive.
Polonium is a radioactive chemical element.
Polonium-218 is radioactive.
No. Polonium is an extremely deadly radioactive toxin.
Radium and polonium are radioactive natural chemical elements.
Polonium is extremely toxic and also radioactive.
Polonium is dangerous because is extremely radioactive.
No. Polonium is a natural product of radioactive dacay.
Polonium and radium are radioactive elements and toxic; they are dangerous.
Polonium is both chemically toxic and radioactive.
No. The Curies did not discover uranium. They discovered polonium and radium, of which polonium is more radioactive.