Element Polonium was discovered in 1898 by Marie and Pierre Curie, when it was extracted from the uranium ore pitchblende and identified solely by its strong radioactivity: it was the first element to be so discovered.
Polonium was named after Marie Curie’s homeland of Poland. Polonium has few applications, and those are related to its radioactivity: heaters in space probes, antistatic devices, sources of neutrons and alpha particles, and poison.
It is a radioactive element, and extremely dangerous to humans.
Polonium is a chemical element with the symbol Po and atomic number 84.
Names and Identifiers
|Molecular Weight:||209.00000 g/mol|
|EC Number :||n/a|
Physical & Chemical Properties
|Boiling Point:||1235 K (962 °C, 1764 °F)|
|Melting Point:||527 K (254 °C, 489 °F)|
Polonium has 42 known isotopes, all of which are radioactive. They have atomic masses that range from 186 to 227 u.
|Isotope||Mass/Da||Half-life||Mode of decay||Nuclear spin||Nuclear magnetic moment|
|206Po||205.98047||8.8 d||C to 206Bi; α to 202Pb||0|
|207Po||206.98158||5.80 h||EC to 207Bi; α to 203Pb||5/2||0.79|
|208Po||207.98123||2.898 y||EC to 208Bi; α to 204Pb||0|
|209Po||208.982404 (5)||102 y||EC to 209Bi; α to 205Pb||1/2||0.77|
|210Po||209.98286||138.38 d||α to 206Pb||0|