Polonium
A radioactive element that is a member of the chalcogen family. It has the atomic symbol Po, atomic number 84, and the atomic weight of the isotope with the longest half-life (209Po) is 208.98. It decays by alpha-emission.
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Subheadings:
Tree Number(s): D01.268.185.600, D01.268.271.680, D01.268.513.875, D01.496.749.305.680
MeSH Unique ID: D011059
Registry Number: DQY03U61EJ