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The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at The data is made available under the Creative Commons License (CC BY 3.0, For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.

Term:polonium-208 atom
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Accession:CHEBI:37368 term browser browse the term
Definition:The radioactive isotope of polonium with relative atomic mass 207.98123 and half-life of 2.898 years.
Synonyms:related_synonym: (208)84Po;   (208)Po;   Formula=[208Po];   InChI=1S/Po/i1-1;   InChIKey=HZEBHPIOVYHPMT-BJUDXGSMSA-N;   SMILES=[208Po];   polonium-208

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19812
    chemical entity 19812
      atom 19811
        metal atom 17436
          polonium atom 0
            polonium-208 atom 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19812
    subatomic particle 19811
      composite particle 19811
        hadron 19811
          baryon 19811
            nucleon 19811
              atomic nucleus 19811
                atom 19811
                  main group element atom 19710
                    p-block element atom 19710
                      chalcogen 19460
                        polonium atom 0
                          polonium-208 atom 0
paths to the root